Unlocking a Car Door Using a Tennis Ball

And leaves no fingerprints or DNA. Great theft tutorial. /snark.

Alas, locks don't work on air pressure...this was debunked on the latest episode of "Mythbusters" as well. The likely scenario here is that someone out-of-frame unlocks the door at the appropriate moment with the remote-entry device.

Funny, this was just covered on Mythbusters. It is a fraud. Someone is standing off camera with the remote.

Liam beat me to it. Doors won't open to pressure, and considering the mechanics of a door lock itself, it's not all that surprising.

Plus it would be a big oversight if the auto manufacturers allowed the security system to be so easily defeated.

Not only did the MythBusters bust it, but then they hooked up a real air pressure hose and valve (like that of pumping your tires), and it still didn't work. Completely busted.

The real cool lock trick:
if you lock your keys in the car, and you know someone who has a spare (and you have a remote unlocker), they can click it through the phone - just hold the phone close to your door, and it will unlock.

Unfortunately, cephyn, the 'real' cool lock trick doesn't work either.

Next thing you know you'll be wanting to sell me a bridge in Brooklyn.