There is a wide variety of accessories that you can use to control Grapevine. Here are some examples but there are many more:
1. Pointing Devices (direct mouse control)
Roller Mouse (Trackball Mouse)
All you have to do is look at the screen to control Grapevine. A 'dwell-click' option can be used to select what you're looking at after a set number of seconds. Alternatively, you can use a single button to perform a click.
A sensor mounted on the screen tracks your head movements and moves a pointer around the screen accordingly.
This can be attached to your arm, leg or head and used to move a pointer on the screen.
2. Switch Devices (for scanning)
These can have a range of different properties depending on your needs. Buttons can be placed to take advantage of body parts with the best motor-function.
A straw that you can suck on or blow into to control Grapevine.
Blink Switches or Muscle Switches
Muscle-controlled switches that detect facial or other muscle contractions.