Mystery as 100 drivers are locked when keyfobs suddenly stop working at Tesco

Police have said don’t panic and Ofcom is looking into the matter (Picture: Google Street View)Dozens of motorists have been left scratching their heads after they were unable to get into their cars when their keyfobs stopped working.
Around 100 people who had parked outside a Tesco in Royston, Hertfordshire, were affected and in a bizarre twist, the case is now being investigated by TV and radio regulator Ofcom.
Police have also looked into the case, but so far have not found a cause. How