Clever trick will safeguard Apple Watch from thieves

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A special sensor on the back uses infrared, visible-light LEDs and photodiodes to detect your heart rate. Photo: Robert Baldwin/The Next Web
A special sensor on the back of the Apple Watch uses infrared, visible-light LEDs and photodiodes to detect your heart rate. Photo: Robert Baldwin/The Next Web

CUPERTINO, Calif. — One of the big questions about the Apple Watch is how Apple will prevent thieves from ripping it off your wrist and using it to clear your bank account.

Because the Apple Watch is connected to Apple Pay — making purchases as easy as a quick swipe — what’s to stop miscreants from abusing it?

The answer wasn’t addressed at Tuesday’s unveiling, but an Apple staffer at the hands-on demo told me how the watch will be protected against fraud.

Thanks to sensors on the Apple Watch’s back, the device can tell when it’s being worn and when it has been taken off. When you first put the watch on, you must enter a code. When the watch is removed from your wrist, the watch locks itself and can’t be used for payments unless the code is entered again.

Pretty simple right? Unless the thief chops your arm off, of course, but that’s a different story.

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