XPost: rec.radio.amateur.policy, uk.radio.amateur   
   From: ianREMOVETHISjackson@g3ohx.co.uk   
      
   In message , andyW   
    writes   
   >On 03/03/2021 13:33, Ian Jackson wrote:   
   >   
   >> The problem was that in a supermarket carpark, customers were having   
   >>trouble locking and unlocking their cars. Is it possible that the   
   >>OFCOM  engineer actually found that he needed to do a bit of urgent   
   >>on-the-job  shopping?   
   >   
   >It was likely because this is part of a car theft process. The thieves   
   >turn up and turn on a jammer, people arrive walk away from their car   
   >and hit the button as they walk but the car does not lock and they   
   >don't notice. The bad guys now have an open car to steal from or drive   
   >away.   
   >   
   >It commonly occurs in supermarket, station or airport car parks so when   
   >there is a report of people having trouble opening or locking cars the   
   >police suspect thieves.   
   >   
   One of my past cars had an infrared fob. It had a range of about 3 feet,   
   and seemed to do a perfect job of opening and closing the car.   
   Circuit-wise, it was probably less-complicated than an RF fob (and   
   receiver), and almost certainly totally immune to RF interference. Are   
   RF fobs not simply technology for technology's sake?   
   --   
   Ian   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)