French developer Marc Teyssier developed a robotic finger that plugs into the USB port of your phone. “MobiLimb” can crawl across a desk, wave when notifications arrive, receive finger gesture messages, or “stroke the user’s hand.” Marc built a Unity application to rapidly prototype gestures on Android, and he notes that reactions have been interesting. You can check the finger out in the video below:



He told the BBC people generally found the finger creepy or weird because it was so unusual, but hoped it would be “accepted” in time.

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Source: [H]ardOCP – French Researcher Gives Smartphones a Finger