Amateurs, frankly. The current modus operandi is to find your BMW/Land Rover/Mercedes. Wait for it to come to your hand carwash, tyre company etc and get unint

Amateurs, frankly. The current modus operandi is to find your BMW/Land Rover/Mercedes. Wait for it to come to your hand carwash, tyre company etc and get uninterrupted access to the OBD port along with the key. Program new key, find the address of the vehicle, walk up a few days later and drive it off at 3am in seconds. If that's too much like shooting fish in a barrel, then the 'keyless relay theft' is probably more your bag. Using a relay transceiver, if the key is in the house within range, then you can trick the motor into thinking the key is present. Many cars will allow you to continue to drive them even if the key if out of range. Provided you don't turn the engine off, this gives you plenty of scope to get away and clone a new key in the meantime. Tl;DR, OBD and keyless technology is basically flawed. The best countermeasure is a good old fashioned crook lock.