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A comment on Everykey – The Master Key to Your Phone, Laptop, Website Accounts, and More. Parent comment

Re:Everykey – The Master Key to Your Phone, Laptop, Website ... by clinta on Saturday February 06, 2016 @01:47PM (#11049088)
Not sure if they are, but it could be done by having the device measure the round trip time of the signal, and refusing to answer if it's too long.
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Re:Everykey – The Master Key to Your Phone, Laptop, Website ... by bravo22 on Monday February 08, 2016 @12:02PM (#11059276)
Most likely not because the turn around time in a challenge and response, and clock skews between devices is far greater than the range boost.
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