Engineers give ‘dumb’ headphones IQ boost

Engineers give ‘dumb’ headphones IQ boost

Engineers from Rutgers University, New Jersey, USA, have found a cheap, simple way to transform ordinary headphones into sensors which can be plugged into smartphones to identify users and monitor their heart rates, among other functions.

Headphones are among the most popular wearable devices in the world. In recent years, they have continued to expand their…

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