More information on electronic car keys

In my 8/19/13 post about my problem with electronic car keys, I did not realise that the car will only start by pressing the button if the car keys are actually close to the car. So, it would not be possible for a thief to simply press the button and start the car if the keys were not present. Thanks to Andy for pointing this out. of course, it still leaves the problem that if the doors cannot be locked due to an electrical fault in the system, any items can still be stolen from the vehicle. Thanks again, Andy for the correction.