SwitchXS provides virtually complete access to Mac OS X and all standard Mac applications for people who can only use one or more switches. It offers full mouse and keyboard emulation by means of a scanning mode. With each click on the switch the user selects an action, such as "move the cursor up" or "type B", from a "scanning" menu. SwitchXS is typically used by people who are, for example, quadriplegic due to an accident, or living with neuromotor diseases such as Amyotrophic Lateral Sclerosis (ALS) or Spinal Muscular Atrophy (SMA) with very limited limb movement.
SwitchXS provides a number of predefined scanning panels that the user can choose to move the cursor, click, and type into all standard Mac applications. It also allows the user advanced control over features such as audio-cueing, speech-cueing, key repeat, scanning speed and cycling, mouse speed and movement, and SmartTransparency™, which makes the scanning panel partially or fully transparent when no scan is taking place to enjoy optimum use of screen real-estate. SwitchXS works with any HID compliant USB gamepad, joystick, keyboard, and with any HID compliant USB mouse or trackball. SwitchXS also works with USB switch interfaces emulating any of the above devices.
SwitchXS includes LayoutKitchen®, an editor that allows users to make their own scan panels. For word prediction, in languages using the Roman alphabet as well as many other languages, SwitchXS can be combined with KeyStrokes.
More information: http://www.infogrip.com/products/keyboards/onscreen/switchxs.html