DataPlay made a splash two years ago when it unveiled quarter-size discs that store 500 megabytes. Now, the first compatible devices will hit the market this summer. iRiver's iDP-100 ($369, shown) will be the first digital audio player, while Kinpo Electronics has shown a 3.1-megapixel digital camera. Discs cost $11 each.
www.dataplay.com
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.


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