Tech gadgets

Associated Press
Singer Usher, right, performs during the introduction of the Xbox 360 music video game 'Dance Central Three' for the Xbox 360 with Kinect, at the Microsoft Xbox E3 2012 media briefing in Los Angeles Monday, June 4, 2012. The 2012 E3 Electronic Entertainment Expo runs from June 5-7 in Los Angeles. (AP Photo/Damian Dovarganes)

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