4 ms·

My car allows remote lock but has no feature to unlock via the app at all. And in addition the key has to be present inside the car to drive.

• egwor 6y ago
  If they can boost the signal of the key, then it would appear that the key is in the car. The car is unlikely to stop if the key signal is lost due to safety concerns.
  • yellowapple 6y ago
    Would triangulation solve at least the signal boost part of the equation? A car thief would have a heck of a time trying to violate the laws of physics to trick that, no?
    • yencabulator 6y ago
      No need to triangulate, just measure round-trip time.
      • egwor 6y ago
        Ooh, interesting. Wouldn't that be an extremely short time to measure? It would need to compare <1m response time vs <10m? I would imagine that having an accurate time chip for that short duration would be quite expensive? I have no idea though. I'd be interested to know more
        • egwor 6y ago
          (as in 1meter rather than 1min!)
        • yencabulator 6y ago
          You won't be driving a stolen car very far if you have to stay within 10 meters of the owner & their keyfob/phone. Accuracy of <200 meters would already eliminate the idea of being able to drive away with a stolen car by just boosting the keyfob signal. And modern cars absolutely know how to switch safely to a "limp mode" that lets you pull over safely.