Aye forgot about that they are even selling pouches to put your key in to stop the signal being transmitted.
No need for OBD, all you need is an amplifier to boost the signal from the keys on your foyer table to the car. A few friends I know who have keyless entry cars use these - these have definitely made a comeback.
Autotrader rates this version as the best steering wheel lock https://www.autoexpress.co.uk/accessories-tyres/95031/best-steering-wheel-locks Says 5+ minutes to remove, and tools needed etc, will stop a chance thief, but more of a deterrent to a dedicated gang, hopefully slowing them down long enough to stop the theft.
He or she doesn't own the key, it's just hidden evidence.
Yes.... but where did you put that key?