On Sun, 15 Jul 2018 20:38:25 +1000, cantankerous geezer Rot Speed blabbered,
again:

Stop being TNP.
They use relays so the car and the key think they are together, the
bridges are transparent transport services.

For the really dumb (yes you rod) ....

the car sends its hello signal, the relay near the car sends it to the
thief near the door. His relay transmits the hello. There has been no
change to the signal.
The key sees the hello and sends its signal back.
The relays then return this signal back to the car. Again there has been
no change to the signal.
The car thinks the key is in the car.

The car and the key have no idea that this transparent bridge is between
them.

You could probably introduce some really tight timing between the events
to make it less likely but they don't and there would still be ways to get
around it. You could even do it with passive range extenders if you really
wanted to. Then you are down to the speed of light and how you measure it.

Trivial to do that.

You simply HAVE to open your stupid senile gob, regardless of what comes out
of it, eh, you lonesome, forsaken, senile oaf from Oz? tsk

--
Richard addressing Rot Speed:
"**** you're thick/pathetic excuse for a troll."
MID: