Car thieves are becoming more advanced by the day and can now steal your car with no trace of theft of any sort. If you lock your car with a key fob, a thief within the vicinity can steal your car, by blocking the locking signal. They’ll then enter your car and use another device to replicate your key fob’s electrical identity and drive away as if nothing had happened.

read more about it here: Lock ‘jammers’ steal cars in a click