Police tell News 12 Connecticut that the signal generated by the key fob used to open a car can be cloned by someone nearby who has the right program on their computer.

Andrea Escobar is a high school teacher in Norwalk but lives in Bridgeport.

She told News 12 she is convinced this is how someone got into her vehicle and stole her SUV over the weekend. She says she is always careful to lock it.

She says a man can be seen in the police video somehow remotely unlocking the vehicle, which automatically turns the car's lights on.

Police say that it is possible, but they can't prove it unless they catch the person in the act and seize his equipment.

They say while cloning key fob signals is not that common is this area, it does happen and you can protect yourself by going online and buying a faraday bag - which blocks the signal.

Escobar says she's buying one because it's better to be safe than sorry. Police say faraday bags can also be used for storing smartphones.