Want a noninvasive health monitor? Put a ring on it.

University of Waterloo engineers have invented a powerful antenna small enough to fit in a ring and capable of transmitting critical medical data to health care workers and individual patients.

Consumer & Gadgets

Body-monitoring tech trend comes with concerns

A ring shimmers on display at the Consumer Electronics Show, but this is no mere piece of jewelry—it's packed with sensors capable of detecting body temperature, respiration and much more.

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