This home cam in video, shared with the Police, shows how clever car theft has become. One crook waves a repeater around the front door, where he presumes the keys are hung safely within. The repeater sends the keyless entry signal to the a paired device, held near the car door. The car interprets the signal as the arriving owner and unlocks the car.
One solution: An RFID blocking sleeve.
Better still, keep your keys by the nightstand: the panic/alarm button can serve as a deterrent to break-in / home invasion.
Cheers (and be safe)