PC World - We've seen a lot of crazy stuff here at GeekTech, from the Wii-Kinect mashup to the yarn monster. But we've never seen something quite like this. YouTube user chipos81 demonstrated in a video a Tic-Tac-Toe game that he programmed for a Livescribe Echo digital pen. The pen beat him, though he did sort of give the game away. But that isn't even the coolest part.
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