Suppose one has a system that automatically signs you on to anything if
your cell phone is within bluetooth range of your computer, and
automatically signs you off out of everything, and puts up a screen
saver that will not go away, when your cell phone is out of range of
your computer.
What is the basis for cloning resistance of a cell phone with blue tooth?
NFC provides physical authenticity - privacy on the model of whispering
one's ear, and authentication by touching. Is there any mechanism
intended for mapping that to keys, so that when two NFC devices meet,
they can give each other petnames, and subsequently recognize public
keys by petname?
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