Researchers possess figured out a way to read the unique, electromagnetic thumbprints of objects through a smartwatch.
There's a big problem in technology nowadays. Our phones and watches are jam packed with radio antennas and sensors to communicate with the smart devices around us. But most of the world isn't smart. It's full of dumb ragged door handles and toolsets we've inherited from parents. So our mighty apps and "connected experiences" can't see any of it.
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Source: fastcompany.com