Look at your wrist. If you’re like one of the millions of Americans with wearable technology attached to it — maybe a watch or a fitness tracker — then you’re well aware that it connects to your phone via Bluetooth. It’s the king of short-range wireless communication, but it has some drawbacks too. It works well when there’s a clear path from object to object, but it needs a significant power boost to push the signal through objects — this is known as “path loss.” So how do we rid ourselves of path loss, all the while creating a more efficient and secure alternative to Bluetooth? A proof of concept from a team of researchers at the University of California, San Diego may be the answer.
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