XT9 is a

text predicting Predictive text is an input technology used where one key or button represents many letters, such as on the physical numeric keypads of mobile phones and in accessibility technologies. Each key press results in a ''prediction'' rather than re ...

and correcting system for mobile devices with full keyboards rather than the 3x4 keypad on old phones. It was originally developed by Tegic Communications, now part of

Nuance Communications Nuance Communications, Inc. is an American multinational computer software technology corporation, headquartered in Burlington, Massachusetts, that markets speech recognition and artificial intelligence software. Nuance merged with its comp ...

.Nuance Communications press release
(2007). It was originally created for devices with

styluses A stylus is a writing utensil or tool for scribing or marking into softer materials. Different styluses were used to write in cuneiform by pressing into wet clay, and to scribe or carve into a wax tablet. Very hard styluses are also used to e ...

, but is now commonly used for

touch screen A touchscreen (or touch screen) is a type of electronic visual display, display that can detect touch input from a user. It consists of both an input device (a touch panel) and an output device (a visual display). The touch panel is typically l ...

devices. It is a successor to T9, a popular predictive text algorithm for mobile phones with only numeric pads. A small XT9 label on can be seen certain phones, mainly on HTC phones.

References

External links

Nuance XT9 customer facing site
{{computer-stub Mobile software Input methods for handheld devices