Similar technologies have already been developed earlier. An example is True Touch technology from Cypress Semiconductor, which fixes a finger hung over the display. Microsoft Research specialists went further, offering for the first time a capacitive touch screen that simultaneously performs preliminary sensory sensing and touch detection .
The screen responds to the angle and speed of approaching the finger to a specific place and immediately offers new context menus and predicts interaction options. As the skills of using the new device improve, it will be able to adapt to various user actions.
One example of using the new technology is the video player controls, which appear on the screen only when you bring your finger to the display.
Look at the technology in action on the video presented by Microsoft: