Researchers at Japan’s Ritsumeikan University have developed a pee-powered diaper monitoring system that will allow anyone who cares for small children or the elderly to know when they are due for a change.

A sensor is placed in the diaper; and a chemical reaction that occurs when the sensor comes into contact with urine is used to create the electricity that is needed to notify parents or staff – as long as they are within 3m of the soiled diaper.

I definitely think that this has more application in medical/daycare scenarios as most parents will not want to know the moment mini-them fills their pants. It will just make them feel guilty for waiting as long as they do.

[Crunch Gear via Coolest Gadgets]

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