Switch input devices
Switches can be used by people who find it difficult to use a computer keyboard and mouse.
You can get lots of different types of switches to use with your computer.
Each person may find it easier to use a different sort of switch.
Some people even have switches made for them so that they can use them very easily.
Switches can be operated by hand, foot, blinking or by sucking and blowing.
Here is a link to a website where you can see lots of different switches.