Remember those baseballs that measured pitch speed with a little LCD screen right on the ball, the ones that only the rich kids on your little league team had? This is the modern, logical extension. For the last year, Adidas has been selling its Smart Ball, a soccer ball (or football, if you insist) with integrated sensors that can detect speed, spin, strike force, and flight time, and a Bluetooth radio to transmit all that data.

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