This is largely an urban myth, although it is technically possible. Automatic garage door openers use remote controls that send out radio frequencies (RF) to activate the garage door opener. It is possible for a burglar to read this RF code as you enter your driveway and push the transmitter button. The crook would have to be in very close proximity (right behind you) to capture this signal with the right equipment and knowledge how to use it to open your garage door in your absence. A criminal with this much talent could probably find a real job somewhere.

This is largely an urban myth, although it is technically possible. Automatic garage door openers use remote controls that send out radio frequencies  to activate the garage door opener. It is possible for a burglar to read this RF code as you enter your driveway and push the transmitter button.