Used to operate onscreen keyboards; switches can be activated by pressure, tilting, any movement, air pressure from sucking a tube, and blinking and are used by people with very limited movement.
Devices that function in a fashion similar to a single button of a computer keyboard or mouse. Switches are often used by individuals who have severe motor difficulties. The users will use any body muscle (head, hand, toe, eye, breath, etc.) that they can control to operate the switch and, thereby, the computer, communication, or environmental control device.
Used in conjunction with a hardware or software device to provide input to the computers or assistive devices such as battery-operated wheelchairs. A variety of types of switches, including pressure switches, pneumatic switches, and voice-activated switches, are available.