3 ms·
Tighter timing constraints doesn't seem like a robust solution. I'm guessing proximity as an authenticator will become a thing of the past. New keys may have a
by mmaunder 9y ago
Tighter timing constraints doesn't seem like a robust solution. I'm guessing proximity as an authenticator will become a thing of the past. New keys may have a button that must be pressed or even a fingerprint scanner.
- craftyguy 9y ago> New keys may have a button that must be pressed My 15 year old car has this feature!
- GoToRO 9y agoYou are living in the Future!
- tempay 9y agoTighter timing constraints could definitely work. If the car requires a response within 10ns you can guarantee the fob is within 1.5m of the car.[1] The only issue is the fob has to be able to decode the signal, calculate a response and transmit it very quickly (or within a very precisely known amount of time). [1] Light travels at ~30 cm/ns, so a round trip time of 1 ns corresponds to 15cm.
- r00fus 9y agoWhy couldn't proximity be GPS based instead of signal based? Too battery intensive? In that case, just make it app-only and have your iOS/Android gps-enabled device(s) be the only keyless entry.
- kansface 9y agoThis would increase the attack surface area.