In the wake of car thefts which appear to be facilitated by keyless entry systems, Toronto police have begun publishing advice on how to avoid this loss. It is accompanied by a diagram (above) that shows a step-by-step method by which two thieves can open a car in the middle of the night. As seen in the diagram, the theft relies on the key fob being left in the open near a door, or somewhere close enough that it can tricked into sending the correct signal to open the car. Cops advise careful insulation of the fob in a case or carrier, or storage a long way from the door.