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The Octopus card ( zh, t=, j=baat3 daat6 tung1, is a reusable contactless stored value
smart card A smart card (SC), chip card, or integrated circuit card (ICC or IC card), is a card used to control access to a resource. It is typically a plastic credit card-sized card with an Embedded system, embedded integrated circuit (IC) chip. Many smart ...
for making electronic payments in online or offline systems in
Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
. Launched in September 1997 to collect fares for the territory's
public transport Public transport (also known as public transit, mass transit, or simply transit) are forms of transport available to the general public. It typically uses a fixed schedule, route and charges a fixed fare. There is no rigid definition of whic ...
system, it has grown into a widely used system for transport and other retail transactions in Hong Kong. It is also used for purposes such as recording school attendance and permitting building access. The cards are used by 98 percent of the population of Hong Kong aged 15 to 64 and the system handles more than 15 million transactions, worth over HK$220 million, every day. The Octopus card system was the world's second
contactless smart card A contactless smart card is a contactless credential whose dimensions are credit card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit ticket ...
system, after the Korean
Upass Upass () was a prepaid card for the transportation system in Seoul and its suburbs. The card was issued by Seoul Bus Transport Association and eB Card. Its parent-generation card is Seoul Transportation Card, a world-first commercial-used RF car ...
. It won the Chairman's Award at the World Information Technology and Services Alliance's 2006 Global IT Excellence Awards for, among other things, being the world's leading complex automatic fare collection and contactless smart card payment system. Its success led to the development of similar systems elsewhere, including
Navigo card The Navigo card () is a contactless smart card used to travel on public transport in Paris and Île-de-France. The card is based on the Calypso (electronic ticketing system), Calypso standard, initially implemented with Radio-frequency identifica ...
in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
,
Oyster card The Oyster card is a Payment#Types_and_methods_of_payment, payment method for public transport in London and some surrounding areas. A standard Oyster card is a blue ISO/IEC 7810, credit-card-sized Stored-value card, stored-value contactless ...
in
London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
, Opal card in
New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
, and NETS FlashPay and EZ-Link in
Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...
.


History

When Hong Kong's Mass Transit Railway (MTR) began operations in 1979, it used recirculating
magnetic stripe card The term digital card can refer to a physical item, such as a memory card on a camera, or, increasingly since 2017, to the digital content hosted as a virtual card or cloud card, as a digital virtual representation of a physical card. They shar ...
s as fare tickets. The Kowloon-Canton Railway (KCR) adopted the same magnetic cards in 1984. The Common Stored Value Ticket was a version that held a balance for use over multiple trips. In 1989, the Common Stored Value Ticket system was extended to
Kowloon Motor Bus The Kowloon Motor Bus Company (1933) Limited (KMB) is a bus company operating Bus services in Hong Kong, franchised services in Hong Kong. It is the largest bus company in Hong Kong by fleet size and number of bus routes, with over 4,000 buses ...
(KMB) buses providing a feeder service to MTR and KCR stations, and to Citybus. It was also extended to a limited number of non-transport applications, such as transactions and payments at photo booths and for fast food vouchers. In 1993,
MTR Corporation MTR Corporation Limited is a majority government-owned public transport operator and property developer in Hong Kong which operates the Mass Transit Railway, the most popular public transport network in Hong Kong. It is listed on the Hong K ...
announced it would move to use contactless smart cards. In 1994 it partnered with four other major transit companies in Hong Kong,
Kowloon-Canton Railway Corporation The Kowloon-Canton Railway Corporation (KCRC; ) is a Government of Hong Kong, Hong Kong State-owned enterprise, wholly government-owned railway and land Asset management, asset manager. It was established in 1982 under the Kowloon-Canton Railw ...
,
Kowloon Motor Bus The Kowloon Motor Bus Company (1933) Limited (KMB) is a bus company operating Bus services in Hong Kong, franchised services in Hong Kong. It is the largest bus company in Hong Kong by fleet size and number of bus routes, with over 4,000 buses ...
, Citybus, and Hongkong and Yaumati Ferry, to create a joint-venture business, then known as Creative Star Limited. After three years of trials, the Octopus card was launched on 1 September 1997. Three million cards were issued in the first three months. The system's quick success was because MTR and KCR required all holders of Common Stored Value Tickets to replace them with Octopus cards within three months or have their tickets expire. Another reason was a coin shortage in Hong Kong in 1997. With the transfer of Hong Kong away from British rule, there was a belief that older Hong Kong coins embossed with
Queen Elizabeth II Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
's head would rise in value, so many people held on to them waiting for their value to increase. The Octopus system was quickly adopted by other Creative Star partners. KMB reported that by 2000 most bus journeys were completed using an Octopus card. Boarding a bus in Hong Kong without using the Octopus card requires giving exact change, making it cumbersome compared to using the Octopus card. By November 1998, 4.6 million cards had been issued, and rising to 9 million by January 2002. In 2000, the
Hong Kong Monetary Authority The Hong Kong Monetary Authority (HKMA) is the central bank, central banking institution of Hong Kong. It is a government authority founded on 1 April 1993 when the Office of the Exchange Fund and the Office of the Commissioner of Banking merge ...
granted a deposit-taking company licence to the operator. This increased the proportion of permitted non-transport–related Octopus card transactions from 15% of turnover to 50%. About HK$416 million was deposited in the Octopus system at any given time as of 2000. On 6 November 2005, Octopus Cards Limited launched Octopus Rewards, a program that allows cardholders to earn rewards with participating merchants. Founding partners for the Octopus Rewards program included
HSBC HSBC Holdings plc ( zh, t_hk=滙豐; initialism from its founding member The Hongkong and Shanghai Banking Corporation) is a British universal bank and financial services group headquartered in London, England, with historical and business li ...
, UA Cinemas and Wellcome. The rewards are in the form of points, or ''reward dollars'', stored on the card. The rate at which reward points are earned per dollar spent differs between merchants. Reward points can be redeemed as payment for purchases at partner merchants for at least HK$1 per reward dollar. New cards with greater levels of security were launched in 2015. Holders of first generation cards could voluntarily replace their cards at an Octopus Service Point without charge. From January 2018, first generation cards started to become unusable. In March 2024, Octopus Card Limited launched a version of the Octopus card with support for the China T-union network, allowing the holder to pay for public transport fares in 336 cities of Inland China. The card is topped up using HKD and automatically converted into RMB when taking non-Hong-Kong public transport.


Etymologies and logo

The
Cantonese Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly known as Canton) and its surrounding Pearl River Delta. While th ...
name for the Octopus card, ''Baat Daaht Tùng'' (), translates literally as "eight-arrived pass", where ''Baat Daaht'' may translate as "reaching everywhere". Less literally, the meaning is taken as the "go-everywhere pass". It was selected by the head of the MTR Corporation, the parent company of Octopus Cards Limited, in a naming competition in 1996. The number eight refers to the cardinal and ordinal directions, and the four-character idiom ( zh, t= ), a common expression loosely translated as "reachable in all directions". Eight is also considered a lucky number in Chinese culture, and the phrase can possibly be associated with the similar-sounding , which means "getting wealthy" () in Cantonese. The English name ''Octopus card'' was also selected in the naming competition. It also references the number eight, since an
octopus An octopus (: octopuses or octopodes) is a soft-bodied, eight-limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like oth ...
has eight
tentacle In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work main ...
s. The logo used on the card features an
infinity symbol The infinity symbol () is a mathematical symbol representing the concept of infinity. This symbol is also called a ''lemniscate'', after the lemniscate curves of a similar shape studied in algebraic geometry, or "lazy eight", in the terminolo ...
.


Card usage

The Octopus card was originally introduced for fare payment on the MTR; but usage quickly expanded to other retail businesses in Hong Kong. The card is now commonly used in most public transport, fast food restaurants, supermarkets, vending machines, convenience stores, photo booths, parking meters, car parks, and many other retails business where small payments are frequently made. Over 33 million Octopus cards are in circulation as of 2018, with the card being used by 99 per cent of Hong Kong residents. Notable businesses that started accepting Octopus cards at an early stage included PARKnSHOP, Wellcome, Watsons,
7-Eleven 7-Eleven, Inc. is an American convenience store chain, headquartered in Irving, Texas. It is a wholly owned subsidiary of Seven-Eleven Japan, which in turn is owned by the retail holdings company Seven & I Holdings. The chain was founde ...
,
Starbucks Starbucks Corporation is an American multinational List of coffeehouse chains, chain of coffeehouses and Starbucks Reserve, roastery reserves headquartered in Seattle, Washington. It was founded in 1971 by Jerry Baldwin, Zev Siegl, and Gor ...
,
McDonald's McDonald's Corporation, doing business as McDonald's, is an American Multinational corporation, multinational fast food chain store, chain. As of 2024, it is the second largest by number of locations in the world, behind only the Chinese ch ...
, and
Circle K Circle K Stores, Inc. is a Canadian-American chain of convenience stores headquartered in Tempe, Arizona, and owned by Alimentation Couche-Tard, Alimentation Couche-Tard, Inc., based in Laval, Quebec. Founded in 1951 in El Paso, Texas, the comp ...
. Between June 2003 and November 2004, the Hong Kong Government replaced its 17,000 parking meters with an Octopus card–operated system. Octopus card was then the only accepted form of payment until 2021 when new meters were introduced that accepted
contactless payment Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for making sec ...
, Faster Payment System and QR code payment. Octopus cards also double as access control cards in buildings and for school administrative functions. At certain office buildings, residential buildings, and schools, use of an Octopus card is required for entry.


Payments

Payments are made by holding the card against or within a few centimetres of an Octopus card reader. The reader acknowledges payment by emitting a beep, and displaying the amount deducted and the remaining balance of the card. The standard transaction time for readers used for public transport is 0.3 seconds, and for retailers' card readers is 1 second.


Public transport

When using the MTR heavy rail system, each passenger's entry point is recorded and the appropriate fare based on distance travelled is deducted when they validate their cards again at the exit point. The MTR usually charges less for journeys made using an Octopus card instead of conventional single-journey tickets. For example, the adult fare of a single journey from Chai Wan to Tung Chung is HK$25.7 with an Octopus card, and HK$28.5 with a single journey ticket. Other public transport operators also offer intermittent discounts for using Octopus cards on higher fares and round-trip transits on select routes.


Taxis

The first trial of using Octopus card readers in Hong Kong taxis started in June 2006 with the Yellow Taxi Group in the
New Territories The New Territories (N.T., Traditional Chinese characters, Chinese: ) is one of the three areas of Hong Kong, alongside Hong Kong Island and Kowloon. It makes up 86.2% of Hong Kong's territory, and contains around half of the population of H ...
. It was reported on 30 October that eight of the twenty taxis participating in the trial had dropped out. Part of the reason was technicaldrivers needed to return to the office every day for accounting. Most taxi drivers in Hong Kong are self-employed and prefer to account their profit and rent on a daily basis, while Octopus transferred money through a bank after one working day, so drivers could be left over a weekend or longer waiting for their account to be reconciled. Installation and service fees are also a concern. Wong Yu-ting, the managing director of the Yellow Taxi Group, wanted retailers to offer discounts to Octopus taxi passengers, but the
Transport Department The Transport Department of the Government of Hong Kong is a department of the civil service responsible for transportation-related policy in Hong Kong. The department is under the Transport and Logistics Bureau. The Transport Department was ...
objected as taxi fare discount is illegal in Hong Kong. In March 2018, Octopus Cards Limited announced plans to re-enter the taxi payment market with a new mobile app for taxi drivers. The mobile app is able to receive funds by tapping the passenger's Octopus card to the device's
Near-field communication Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of or less. NFC offers a low-speed connection through a simple setup that can be used for the boots ...
(NFC) reader, or by allowing passengers to scan a QR code. In October 2020, Octopus Cards Limited launched Octopus Mobile POS, a more compact version of the Octopus reader to help taxi drivers and small- and medium-sized retailers accept cashless payments. The new Octopus Mobile POS, that works with the mobile app, was opportune during the
COVID-19 pandemic The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...
, as it helped provide merchants customers with peace of mind regarding potential virus transmission. By July 2021, over 15,000 taxi drivers had installed Octopus Mobile POS.


Outside Hong Kong

In collaboration with China UnionPay, Octopus Cards Limited introduced Octopus card usage to two Fairwood restaurants in Shenzhen in August 2006. In 2008, five Café de Coral locations in Shenzhen also started accepting Octopus. Value cannot be reloaded to Octopus cards in Shenzhen, but the Automatic Add Value Service is available to automatically deduct money value from a customer's credit card to reload an Octopus card. The two Fairwood restaurants in Shenzhen that were enabled for Octopus card payments are located at Luohu Commercial City and Shenzhen railway station. Shenzhen became the first city outside Hong Kong in which Octopus cards may be accepted as payment. In Macau, the Octopus card was introduced in December 2006 when two
Kentucky Fried Chicken KFC Corporation, doing business as KFC (an abbreviation of Kentucky Fried Chicken), is an American fast food restaurant chain specializing in fried chicken and chicken sandwiches. Headquartered in Louisville, Kentucky, it is the world's s ...
restaurants in the territory adopted its usage as payment. Similar to its usage in Shenzhen, an Octopus card may not be reloaded in Macau, and the currency exchange rate between the
Macanese pataca The Macanese pataca or Macau pataca ( zh, t=澳門元, cy=Oumún yùhn; ; sign: MOP$; ISO code: MOP) is the currency of Macau. It is subdivided into 100 ''avos'' (; ''sin''), with 10 avos called ''ho'' () in Cantonese. Macau has a currency ...
and the Hong Kong dollar when using an Octopus card is MOP1:HKD1. The two Kentucky Fried Chicken restaurants in Macau that adopted the Octopus card for payment are located at the Rua do Campo and the Sands Casino. Shenzhen Tong cards are now widely used in Shenzhen instead, and a combined Shenzhen Tong – Hong Kong Octopus card is available, called the Hu Tong Xing, with RMB & HKD in different purses. The Macau Pass is now widely used in Macau.


Balance enquiries, reloading and refunds

Spare coins can also be added on to Octopus cards at "Coin Carts", a vehicle operated by
Hong Kong Monetary Authority The Hong Kong Monetary Authority (HKMA) is the central bank, central banking institution of Hong Kong. It is a government authority founded on 1 April 1993 when the Office of the Exchange Fund and the Office of the Commissioner of Banking merge ...
.


Types of cards

There are two main types of Octopus card (''On-Loan'' and ''Sold''), and two less common types (''Airport Express Tourist'' and ''MTR Airport Staff'').


Main types of cards


On-Loan cards

On-Loan cards are issued for use in day-to-day functions, primarily for fare payment in transport systems. They are further classified into ''Child'', ''Adult'', ''Elder'', and ''Personalised'' categories, with the first three based on age and different amounts of fare concession. With the exception of the ''Personalised'' cards, On-Loan cards are anonymous; no personal information, bank account, or credit card details are stored on the card, and no identification is required for the purchase of these cards. If an owner loses a card, only the stored value and the deposit of the card are lost. On-Loan Octopus cards may be purchased at all MTR stations, the KMB Customer Service Centre, New World First Ferry (NWFF) Octopus Service Centres, and the New World First Bus (NWFB) Customer Service Centre. A student on-loan Octopus Card was initially issued, but was discontinued in 2005.


Samsung Pay

Since 14 December 2017, the cardless Octopus, named "Smart Octopus", is available with
Samsung Pay Samsung Pay (stylized as SΛMSUNG Pay) is a mobile payment and digital wallet service, operated by the South Korean company Samsung Electronics. It lets users make payments using compatible smartphones and other Samsung-produced devices, accesse ...
, a mobile payment platform provided by
Samsung Samsung Group (; stylised as SΛMSUNG) is a South Korean Multinational corporation, multinational manufacturing Conglomerate (company), conglomerate headquartered in the Samsung Town office complex in Seoul. The group consists of numerous a ...
. By using the phone's NFC function and magnetic secure transmission (MST) technology, users can tap their selected Samsung devices on Octopus readers, paying in a similar way as a normal physical Octopus cards. Users can choose to transfer their card data from an existing anonymous On-Loan Adult or Elder Octopus to the Smart Octopus. All card value and reward points are transferred and held in the Samsung Pay app. The physical card is then deactivated and can no longer be used. Users can also choose to purchase a new Adult or Elder Smart Octopus in the app. Smart Octopus provides features like instant transaction notification and in-app top-up function. In-app top-ups initially incurred a 2.5% handling fee but this fee was removed in June 2020 when support for
Apple Pay Apple Pay is a mobile payment service by Apple Inc. that allows users to make payments in person, in iOS apps, and on the web. Supported on iPhone, Apple Watch, iPad, Mac, and Vision Pro, Apple Pay digitizes and can replace a credit or debi ...
was launched.


Apple Pay

Since 2 June 2020, Octopus cards can be added to Apple Pay. As Octopus cards use FeliCa technology, only Apple Watch 3,
iPhone 8 The iPhone 8 and iPhone 8 Plus are smartphones developed and marketed by Apple Inc. They are the eleventh generation of the iPhone. The iPhone 8 was released on September 22, 2017, succeeding the iPhone 7 and iPhone 7 Plus, respectively. T ...
, and subsequent model are supported. Octopus for Tourists was launched in August 2020. Users can choose to create a virtual Octopus card inside Apple Pay by topping up with their loaded credit cards, or to transfer data from an existing physical Octopus card. It supports Apple Pay's Express Transit function, which allows payments to be made from the iPhone or Apple Watch without needing to switch on the phone or authenticating the payment with Face ID,
Touch ID Touch ID is an electronic fingerprint recognition feature designed and released by Apple Inc. History In 2012, Apple acquired AuthenTec, a company focused on fingerprint-reading and identification management software, for $356 million. The acq ...
, or password.


Huawei Pay

Since 9 December 2020, Octopus card can be added to Huawei Pay. But it can only be used on Huawei phones sold in Hong Kong, Macau and China Users can download the Octopus app from Huawei AppGallery to purchase new Octopus cards or transfer physical Octopus cards. If users have a UnionPay credit card, they can also purchase new Octopus cards in Huawei Wallet.


Google Wallet

Since 28 April 2024,Users can purchase new Mobile Octopus via Octopus Apps from Google Play Store. It only support Devices with Android System Version 12 or Higher,Non-Root,NFC and Always Connected to Internet. The type of the card would be Adults only and independent than any Other mobile octopus and not support offline mode. User can add this card to your Google Wallet.


Technology

The Australia-based company ERG Group (now Vix Technology) was selected in 1994 to lead development of the Octopus project. It designed, built and installed the Octopus system. Operations, maintenance and development were undertaken by Octopus Cards Limited, and in 2005, it replaced the central transaction clearing house with its own system. The Octopus card is the first major public transport system to use the
Sony is a Japanese multinational conglomerate (company), conglomerate headquartered at Sony City in Minato, Tokyo, Japan. The Sony Group encompasses various businesses, including Sony Corporation (electronics), Sony Semiconductor Solutions (i ...
13.56 
MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...
FeliCa
radio frequency identification Radio-frequency identification (RFID) uses electromagnetic fields to automatically Automatic identification system, identify and Tracking system, track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, ...
(RFID) chip. It is a contactless system, so users need only hold the card in close proximity to the reader. Data is transmitted at up to 212 kbit/s (the maximum speed for Sony FeliCa chips), compared to 9.6 kbit/s for other smart card systems like
Mondex Mondex was a smart card electronic cash system, implemented as a stored-value card and owned by Mastercard. Pioneered by two bankers from NatWest in 1990, it was spun-off to a separate consortium later on, then sold to Mastercard. Mondex all ...
and Visa Cash. The card has a storage capacity of 1 to 64  kB, compared to 125
byte The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable un ...
s provided by magnetic stripe cards. Octopus pre-dates the
ISO/IEC 14443 ISO/IEC 14443 ''Identification cards – Contactless integrated circuit cards – Proximity cards'' is an international standard that defines proximity cards used for identification, and the transmission protocols for communicating with it. The ...
standards so uses a nonstandard RFID system. The operating range of the reader/writer is between depending on the model used. Octopus is designed so that transactions are relayed for clearing on a
store and forward Store and forward is a telecommunications technique in which information is sent to an intermediate station where it is kept and sent at a later time to the final destination or to another intermediate station. The intermediate station, or node in ...
basis, without any requirement for reader units to have realtime round-trip communications with a central database or computer. The stored data may be transmitted after hours, or in the case of offline mobile readers, may be retrieved by a hand held device, for example a
Pocket PC A Pocket PC (P/PC, PPC) is a class of personal digital assistant (PDA) that runs the Windows Mobile operating system, which is based on Windows Embedded Compact, Windows CE/Windows Embedded Compact, and that has some of the abilities of modern ...
. In practice, different data collection mechanisms are used by different transport operators, depending on the nature of their business. The MTR equips its stations with
local area network A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, campus, or building, and has its network equipment and interconnects locally managed. LANs facilitate the distribution of da ...
s that connect the components that deal with Octopus cards
turnstile A turnstile (also called a gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce One-way traffic#One-way traffic of people, one-way ...
s, Add Value Machines, value-checking machines and customer service terminals. Transactions from these stations are relayed to the MTR's
Kowloon Bay Kowloon Bay (Chinese: 九龍灣) is a bay within Victoria Harbour and a neighbourhood within Kowloon, Hong Kong. The bay is located at the east of the Kowloon Peninsula and north of Hong Kong Island. It is the eastern portion of Victor ...
headquarters through a
Frame Relay Frame Relay (FR) is a standardized wide area network (WAN) technology that specifies the Physical layer, physical and data link layers of digital telecommunications channels using a packet switching methodology. Frame Relay was originally devel ...
wide area network A wide area network (WAN) is a telecommunications network that extends over a large geographic area. Wide area networks are often established with leased telecommunication circuits. Businesses, as well as schools and government entities, use ...
, and then on to the central clearing house system (CCHS). Similar arrangements are in place for retailers such as
7-Eleven 7-Eleven, Inc. is an American convenience store chain, headquartered in Irving, Texas. It is a wholly owned subsidiary of Seven-Eleven Japan, which in turn is owned by the retail holdings company Seven & I Holdings. The chain was founde ...
. Handheld devices are used to scan offline mobile readers, including those installed on minibuses. Buses either use handheld devices or a wireless system, depending on operator.


Security

The Octopus card uses
encryption In Cryptography law, cryptography, encryption (more specifically, Code, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode. This process converts the original representation of the inf ...
for all airborne communication and performs
mutual authentication Mutual authentication or two-way authentication (not to be confused with two-factor authentication) refers to two parties authenticating each other at the same time in an authentication protocol. It is a default mode of authentication in some prot ...
between the card and reader based on the ISO 9798-2 three-pass mutual authentication protocol. In other words, data communications are only established when the card and reader have mutually authenticated based on a
shared secret In cryptography, a shared secret is a piece of data, known only to the parties involved, in a secure communication. This usually refers to the key of a symmetric cryptosystem. The shared secret can be a PIN code, a password, a passphrase, a b ...
access key. This means that the security of the Octopus card system would be jeopardized should the access key be exposed. A stolen Octopus card reader could be used with stolen Octopus software, for example, to add value (up to HK$3,000) to any Octopus card without authorization. Nevertheless, as of 2003, the Octopus card and system had never been hacked. Octopus card readers include a
fail-safe In engineering, a fail-safe is a design feature or practice that, in the event of a failure causes, failure of the design feature, inherently responds in a way that will cause minimal or no harm to other equipment, to the environment or to people. ...
that prevents them from initiating a transaction when more than one card is detected at a time. On 11 February 2009, ''
Sing Tao Daily The ''Sing Tao Daily'' (also known as ''Sing Tao Jih Pao''; ) is among Hong Kong's oldest Chinese language newspapers. It is owned by Sing Tao News Corporation, of which Kwok Ying-shing () is chairman. Its English-language sister is the free ...
'' reported that the fail-safe has been abused for
fare evasion Fare evasion or fare dodging is the act of travel without payment on public transit. When considered problematic, it is mitigated by revenue protection officers and ticket barriers, staffed or automatic, are in place to ensure only those with va ...
through the railway station turnstile. Passengers were stacking four or more cards on the reader before breaking through the turnstile, deliberately triggering the fail-safe to avoid deduction of credit from their cards. If challenged they could blame a malfunction and present an Octopus card with a record of an unsuccessful transaction.


Operator

The Octopus card system is owned and operated by Octopus Cards Limited, a wholly owned subsidiary of Octopus Holdings Limited. Founded as Creative Star Limited in 1994, it was renamed Octopus Cards Limited in 2002. In January 2001, the shares of Hongkong and Yaumati Ferry were transferred to New World First Bus and New World First Ferry. In the same year, together with MTR Corporation, the company changed from non-profit making status to a profit making enterprise. Due to the expansion of the company's businesses, Octopus Holdings Limited was established in 2005 with Octopus Cards Limited restructured as a subsidiary. Being a payment business, Octopus Cards Limited is regulated by the Hong Kong Monetary Authority. Octopus' non-payment businesses are not subjected to such regulation and are operated by other subsidiaries of Octopus Holdings Limited. As of 2007, Octopus Holdings Limited was a joint-venture business owned by five transport companies in Hong Kong; 57.4% by the MTR Corporation, 22.1% by the Kowloon-Canton Railway Corporation, 12.4% by Kowloon Motor Bus, 5% by Citybus, and 3.1% by New World First Bus. The
Government of Hong Kong The Government of the Hong Kong Special Administrative Region (commonly known as the Hong Kong Government or HKSAR Government) is the executive authorities of Hong Kong. It was established on 1 July 1997, following the handover of Hong Kong. ...
owns 76.54% of the MTR Corporation (as of 31 December 2005) and wholly owns the Kowloon-Canton Railway Corporation, so is the biggest effective shareholder of Octopus Holdings Limited, and of Octopus Cards Limited.


Awards

The Octopus card is recognised internationally. It won the Chairman's Award at the World Information Technology and Services Alliance's 2006 Global IT Excellence Awards for being the world's leading complex automatic fare collection and contactless smartcard payment system, and for innovative use of technology.


Issues


EPS add-value glitch

In February 2007 it was found that when customers added value to their cards at self-service add-value points in MTR and Light rail stations, their bank accounts were debited even if the transactions had been cancelled. Octopus Cards Limited claimed that the fault was due to an upgrade of communication systems. Initially, two cases were reported. The company then announced that use
Electronic Payment Services Electronic Payment Services (), commonly known as EPS, is an electronic payment system based in Hong Kong, Macau, and with limited acceptance in Shenzhen since it began operations in 1985. The service is provided by EPS Company (Hong Kong) Limi ...
(EPS) at add-value service points would be suspended until further notice, and that it had started an investigation into the reasons for the problem. On 27 July 2007 it was announced that faulty transactions had been traced back to 2000, and that a total of 3.7 million Hong Kong dollars had been wrongly deducted in 15,270 cases. The company reported that there might be cases prior to 2000, but that only the past seven years’ transactions were stored. The company stated it would co-operate with banks and EPS Company Limited, operator of Electronic Payment Services, to contact customers involved and arrange a refund within ten weeks. On 21 December 2007 the company announced it would permanently cease all transactions using EPS because it could not guarantee such problems would not occur again.


Privacy abuse

On 15 July 2010, a former employee of the CIGNA insurance company claimed CIGNA purchased records for 2.4 million Octopus users. On 20 July, Octopus acknowledged selling customers' personal details to CIGNA and Card Protection Plan Limited, and started an internal review of their data practices. Octopus Holdings made 44 million Hong Kong dollars ($5.7M USD) over 4.5 years. Roderick Woo Bun, Hong Kong's Privacy Commissioner for Personal Data, gave radio interviews and called for transparent investigation, but his term expired at the end of July 2010. Allan Chiang Yam-wang was announced as the incoming Privacy Commissioner. This news was met with protests and international outrage, due to his prior history of privacy invasions involving cameras used to spy on employees at the Post Office, and disclosing hundreds of job applicants' personal data to corporations. Outgoing Privacy Commissioner Woo pledged to finish a preliminary report on the Octopus privacy abuse before his term ended, and called for a new law making it a criminal offence for companies to sell personal data.


Technology

As NFC and cardless payment are more popular in mainland China, some question the slow technology development of Octopus company. Among these commentaries, some suggest market monopoly and government attitude to Octopus are the contributing factor, as the social transportation subsidies are solely through the Octopus system. Octopus CEO Sunny Cheung stated that new technology would be launched in short period of time, such as QR code payment, integration of Octopus card with
Samsung Pay Samsung Pay (stylized as SΛMSUNG Pay) is a mobile payment and digital wallet service, operated by the South Korean company Samsung Electronics. It lets users make payments using compatible smartphones and other Samsung-produced devices, accesse ...
and
peer-to-peer lending Peer-to-peer lending, also abbreviated as P2P lending, is the practice of loan, lending money to individuals or businesses through online services that match lenders with borrowers. Peer-to-peer lending companies often offer their services online ...
.


See also

*
Digital currency Digital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital cu ...
* List of public transport smart cards


References


External links

* * {{Chinese smartcards Financial services companies established in 1997 Contactless smart cards Fare collection systems in China Hong Kong brands Products introduced in 1997 Transport in Hong Kong Stored-value payment card