On 31/05/2019 17:46, Harry Bloomfield wrote:
presented the following explanation :
I've disabled the wireless part of the garage door controller for that
very reason. I don't know whether there is any unique coding but it's
very basic tech so I didn't want to take the risk.

As used for car locking/unlocking, they use a rolling code - they only
respond to a correct code, so fairly safe.

My door controller was probably installed 20 years ago (before I bought
the house) and is pretty basic. The garage is a workshop so I'm happy to
operate a switch if I need the doors open.