I was duped sorry.

[Dan]

Please disregard. I was duped. A cleverly disguised practical joke that I should have sniffed out. I knew better.

[Langer]

Im pretty sure this is not feasible.

Your remote car key operates by sending a weak, encrypted radio signal to a receiver inside the automobile, which in turn activates the door locks.

Since the system works on radio waves, not sound, the only conceivable way a signal from your spare remote could be picked up by one cell phone and relayed to your car's onboard receiver by another would be if both phones were capable of sending and receiving at exactly the same frequency as the remote itself — which they can't be, given that all remote entry devices operate at frequencies between 300 and 500 MHz, while all mobile phones, by law, operate at 800 MHz and higher.


You can check Snopes for questionable emails/stories.  http://www.snopes.com/autos/techno/keyless.asp

[SethV]

Langer is right on.  This is nonsense.

Cell phones transmit audio signals, key fobs transmit RF signals, with a triple redundant wake up.

Only way a cell phone can unlock your car is if you call On-Star!

Seth <- Is a GM engineer that has worked on Remote Entry!

[Dan]

I was duped sorry. Practical joke by a friend of mine. Well kind of a friend of mine. Embarrassing. Sorry!!

[djkimmel]

I see phone people....