Definitions for "on-screen keyboard"
a program which displays a list of choices to the user and allows them to select those choices using a point-and-click, point-and-dwell or simple clicking interface
a utility that allows users to select keys by using an alternative input mode, as shown in Figure A
A utility that displays a virtual keyboard on a computer screen and allows users with mobility impairments to type using a pointing device or joystick.
Keywords:  greatly, aware, excellent, eye, benefit
an excellent example of an eye-aware application that can greatly benefit from a system that adjusts to changes in the user's behavior