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This Smart Belt Shrinks And Increases When You Put On Or Lose Weight

Overeaters and lazy trouser-wearers rejoice!

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It's a prototype of a belt that will automatically loosen when the wearer sits and tighten when he/she stands.

AFP / Getty Images ROBYN BECK

The Belty will also automatically expand if you've eaten too much, and tracks your waistline measurement, offering advice when it's time to shed a few pounds.