Dasher is an information-efficient text-entry interface, driven by natural continuous pointing gestures. Dasher is a competitive text-entry system wherever a full-size keyboard cannot be used - for example:
- when operating a computer one-handed, by joystick, touchscreen, trackball, or mouse;
- when operating a computer with zero hands (i.e. by head-mouse or by eyetracker);
- on a palmtop computer;
- on a wearable computer.
The eyetracking version of Dasher allows an experienced user to write text as fast as normal handwriting - 29 words per minute; using a mouse, experienced users can write at 39 words per minute. The program can be used to write efficiently in any language. Dasher is designed to be fast and fun to learn, and free software.
Opengazer: open-source gaze tracker for ordinary webcams
Opengazer is an open source application that uses an ordinary webcam to estimate the direction of your gaze. This information can then be passed to other applications. For example, used in conjunction with Dasher, Opengazer allows you to write with your eyes. Opengazer aims to be a low-cost software alternative to commercial hardware-based eye trackers.