According to a recent report on Mix96, keyless entry cars are being targeted by thieves in Aylesbury Vale.
Police have been telling drivers to protect their keys when at home, but it seems some criminals are cloning signals elsewhere as well.
Thieves intercept the signals from keys to car.
Superintendent Mike Loebenberg says it's not just about protecting keys in a Faraday bag whilst at home:
"We are aware that some individuals are unfortunately having their keys cloned by that relay method away from the house.
"So it is really important that people utilise that Faraday bag even when they are out and about, with keys in their pocket or handbag for example."
Mostly it's high-value cars being taken, but as the technology becomes more common, all vehicles are at risk.
Mike added:
"It's also important that if you have a vehicle that has keyless entry you really think about utilising a secondary method to secure your vehicle as well.
"For example, a steering wheel lock or manufacturers can fit other devices to add security to the vehicle."
According to the Superintendent, "many vehicles are never recovered, with drivers having to claim for the loss on their insurance."
For some additional tips, see here.