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A comment on Tap your iPhone to unlock your Mac. Parent comment

Re:Tap your iPhone to unlock your Mac by runjake on Tuesday November 05, 2013 @01:19PM (#6676875)
> How does this not drain the iPhone battery?

This is answered right on the linked webpage: Bluetooth Low Energy.

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Re:Tap your iPhone to unlock your Mac by cloudwalking on Wednesday November 06, 2013 @12:02AM (#6680803)
But the app has to be running in memory AND watching the accelerator AT ALL TIMES.
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