Locked your keys in your car????
If you lock your keys in the car and the spare keys are at home, call someone on your cell phone.
Hold your cell phone about a foot from your car door and have the other person at your home press the unlock button of your key fob (clicker), holding it near the phone on their end. Your car doors will unlock.
Saves someone from having to drive your keys to you.
Distance is no object you could be hundreds of miles away, and if you can reach someone who has the other "remote" for your car, you can unlock the doors (or the trunk!).

quote:

Originally posted by Andy76:
Has anyone who has scoffed at this idea actually tried it?
When I first heard of this idea I too laughed derisively at it. Clever physicist that I am I "knew" this couldn't work (for all the reasons already stated). However a friend convinced me to try it and, sure enough, it worked! I was amazed (and a little chastened).
Come on, I dare you to actually try it - it takes all of 30 seconds out of your life.
Or you could just sit there and keep scoffing because you know so much better!

from Snopes:

quote:

More than a few people have inadvertently fooled themselves into believing the cell phone method of unlocking car doors actually works because they tried it and achieved the desired results — not realizing their cars were still within range of their keyless remote devices, and the signals that unlocked the doors were transmitted the usual way [i.e., through the air], not via cellular phone connections.)

Has anyone who has scoffed at this idea actually tried it?
When I first heard of this idea I too laughed derisively at it. Clever physicist that I am I "knew" this couldn't work (for all the reasons already stated). However a friend convinced me to try it and, sure enough, it worked! I was amazed (and a little chastened).
Come on, I dare you to actually try it - it takes all of 30 seconds out of your life.
Or you could just sit there and keep scoffing because you know so much better!

As said before, the frequencies used by the remote is not transmitable through the phone. When has a speaker been able to transmit RF?

Does cheese come with that beer?
I like cheese.