We covered this project, called MouthPad, a couple of years ago, and now it’s finally available to the general public. MouthPad is wireless, connects to devices via Bluetooth, and is compatible with all major operating systems. By moving the tongue across the touchpad, users can also scroll, click, and swipe just like they would on a traditional laptop touchpad. MouthPad can also stay paired with multiple devices and switch between them with the press of a button. Drinking water while wearing MouthPad is fine, but eating or chewing on the device can damage it and void the warranty.