Can’t someone just park by my house and capture my garage door opener’s radio signal and replay it?

Question

I guess what I’m asking is if garage remotes are secure.

In: 10

Answer 1

It depends.

If you have a modern rolling code garage door opener, that’s more secure than the old kind where you set the little switches inside. The fixed code kind were highly susceptible to this attack, and gadgets were sold for precisely this attack.

That said, if you have a well-funded adversary with months of time to spend recording your remote and using lots of resources, then nothing you could afford would be secure.