> There is no reason why keyless entry cannot be more secure than a physical key, other than incompetence.

Isn't the problem that it's designed to work from a distance, and that by boosting the signal the criminals can just increase the distance so that the key inside your house reaches the car? It seems inherently less secure than the old system where the physical key has to be practically touching the ignition to disable the immobiliser.

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Kirby64 6 days ago | parent | next [-]

More modern implementations of this use a time of flight check, so unless you have the ability to violate the laws of physics, boosting the signal so that a far away key transmits its signal to a nearby car is insufficient to unlock/start the car.

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giobox 5 days ago | parent [-]

Are there many car keys actually using time of flight in the fob? Most of the cars I’ve owned use a much simpler approach - the key sleeps (stops broadcasting) unless moved. Drives me nuts with some fobs which have to be vigorously shaken to start broadcasting again and open my car etc. if key isn’t broadcasting, it can’t be mitm’d. It’s been awhile but I seem to recall time of flight being patent encumbered vs sleeping the key.

This obviously isn’t 100 percent full proof but likely works well enough for preventing many common mitm scenarios such as stealing from a car park or drive way most of the time etc.

	▲	Kirby64 4 days ago \| parent [-]
		No idea on actual implementation, but the UWB keys these days all seem to be capable of it. Plenty of manufacturers advertise the capable, e.g., Bosch.

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dzhiurgis 6 days ago | parent | prev [-]

You can boost signal only so much. Apple solved this to be less than a meter or smth like that.

With Tesla you can disable keyless entry and use key card if you are so paranoid. But stealing connected car doesn't make much sense to me.

	▲	tekknik 5 days ago \| parent [-]
		> But stealing connected car doesn't make much sense to me. How so? Even if you know the location you need someone with jurisdiction to go get it. You disable vehicle, then it gets destroyed. EVs are entirely different designs than an ICE vehicle, and Tesla in particular is moving beyond the flawed CANBUS to something more robust and secure.