[Video] How to learn to distinguish the tablet users touch

Modern touch screen does not distinguish between the fingers touch one person from another. Although this could significantly expand the convenience of sharing devices. This question preoccupied in Pittsburgh Disney research lab.

For the "Disney", by the way, this is not the first development of its kind. Remember the "wheelbarrow" AppMATes for the iPad? A free application that you want to download from the App Store, clearly distinguishes between what machine the player has bet on the tablet screen, and displays the corresponding icon in the game. If you look closely, in the "belly" of each machine are soft key contacts, the location of which each "wheelbarrows" of their own. This is the cause identification machines.

The so-called technology "capacitive fingerprint» (Capacitive Fingerprinting) goes much further. The user does not need any additional devices - just need to press your finger on the screen for a few seconds and perform a circular motion (see. video). During this time, passed through the user's body weak current of different frequencies and wave impedance measurement is performed that person. Received in the calibration value is to some extent unique (at least for people who gather around a specific devaysa), because each person has their own bone density, muscle mass has its own, its own clothes with their same electrical characteristics. Thus, you can quickly understand which user touches the screen at the moment. Moreover, as seen in the video, Adobe reader discern even a few people who are fingers on the screen simultaneously.

[youtube http://www.youtube.com/watch? v = zz37rDf0hKI]