Conventional touchscreens sense your input commands when you tap its screen. They don’t know which part of your hand touches the screen.
The developers at Qeexo want to add more functionality, especially to mobile devices, with their new FingerSense technology.
FingerSense allows the touchscreens to capture not only the position of the finger but also how the finger is being used for input. It can tell the difference between various parts of your hand such as your fingertip, nail or knuckle. In an application, for example, a knuckle tap could be used for "right-click", or a fingernail could be used to close an application.
The FingerSense uses a small acoustic sensor to measure the vibrations as different objects tap the screen. FingerSense differentiates between those vibrations and so can tell a tap from a finger versus a tap from a nail, or even from different stylus pens.
This video demo shows how some smartphone apps may be controlled with FingerSense. If you are developing a touch screen input for your device, you might want to check it out.