Car Remote Unlock Through Cell Phone

What if you forgot your car keys and that keyless entry remote banded to them, how are you going to get in your car? Well, if you haven't forgotten your cell phone, too, you can call up someone who has access to that keyless remote, so you can unlock your car or truck via the wireless mobile phone! Yes, supposedly, with two phones and the keyless remote, you can unlock your car by having the person who has the remote press the button over their phone's microphone, which transmits the sound to the person's cell phone at the locked car, therefore unlocking the door because of the radio signal. Okay, this sounds ridiculous.? You be the judge.