How to make all headphones intelligent

ScienceDaily
Mar 11, 2021, 2:21 pm142 pts
How do you turn 'dumb' headphones into smart ones? Engineers have invented a cheap and easy way by transforming headphones into sensors that can be plugged into smartphones, identify their users, monitor their heart rates and perform other services. Their invention, called HeadFi, is based on a small plug-in…

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