Tracking devices add to classic show worries

I was horrified to read in your 13 April article that thieves are now fitting tracking devices to vehicles at shows that they plan to steal. I wonder if this will mean some owners may now stop bringing their vehicles to certain shows to prevent this happening. We take on board all the safety tips you offer but how do you legislate for a tracking device fitted to your car while you are chatting to people at a busy show? Jeff Ford, Salisbury, Wiltshire