Ah also when the introduced airbags ...it was possible (but difficult ) to hit a part of the front bumper which would un-lock the car without the air-bags going off ...
SO I WAS TOLD........

that was well meaning Ford with their sporty Escorts
But it's always the same basic issue with security systems. One person (often a JAFA
*)designs the basis of them and there's a million bastards out there working out how to beat them
* JAFA: Just a Fucking Amateur