Add-on turns a smartphone camera into a joystick (video) -- Engadget - 0 views
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Ira Garcia on 04 Apr 12This article is about an add on that turns your smartphone's camera into a three axis joystick. This was developed by researches from Keio University as an approach to the problem-- getting your screen blocked by your finger when you play. This works by tracking how the markers move as the elastic device deforms.