The startup Augmental developed a mouth-based touchpad to enable people living with paralysis to interact with computers! Just see for yourself what it looks like to use the MouthPad to navigate Google Maps with just the tongue! "The MouthPad’s pressure-sensitive touch pad sits on the roof of the mouth, and, working with a pair of motion sensors, translates tongue and head gestures into cursor scrolling and clicks in real time via Bluetooth." Source: https://news.mit.edu/2024/mouth-based-touchpa