Chin switches are small, lightweight devices that can be operated by the press of a chin. In general, they are mounted at head height in front of the user or hung on a tube that the user wears around their neck like a necklace. When on a tube, more than one switch can be provided, allowing users to have as many buttons for input as they can comfortably wear and press with the chin.
As standard switch inputs, they can be integrated into popular switch control software like Tecla or Grid3. This makes them a useful option for those who can freely move their head and would like more available inputs.
While primarily used by people with disabilities, chin switches have long been used as an input method in various contexts where people may be unable to free their hands. For example, the Roland FR-8X Accordion includes programmable chin switches, to allow the player to change parameters of the instrument while playing. Similarly, helmets used by racecar drivers, combat troops, and astronauts often include chin switches to allow them to control hands-free communications equipment, fans, and other devices.