Hi ........I never thought any more about the following [nicked from another "non Citroen" forum] ........until I read this thread ........
It seems that if you lock your keys in your car or ....as the writer on the other forum suggested ........lose your keys, your car can be opened by phoning home [no jokes about ET ..please

] and having some-one operate your spare remote-control/plipper?

over your home phone & mobile,whilst holding the mobile near to the car it will open the car door
Now I dunno if this works ........my BX tizzydee did'nt have a "plipper" when it came into my possession ...........and tbh I dont wanna go the trouble of finding out if it should/should'nt have one ..........in fact I actually replied with the sarcaustic comment that "It did'nt work on my 2CV so I opened the roof and retrieved my keys"
btw .......any chance of a PM on this "security mod" .....my BX not only has dodgy doorlocks,but it also has a fubar'd offside window winder which leaves the window slightly open and the steering lock is k****ered.
Terry