Hackers can break into dozens of cars at a time with a gadget that costs just £30
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Nearly every car in a Manchester carpark was left unable to be locked last Sunday, the Register reports, in an apparent signal jamming attack.
Any car that uses electronic locking is at risk of jammers. They work by jamming the radio frequencies used by car fobs to lock vehicles remotely. The locking signal is lost in the noise, leaving the driver unable to unlock the car.
The devices can't unlock cars if they've already been locked - and similarly if a vehicle also has a physical key, it can still be locked. But some cars rely exclusively on electronic locking (or don't use keys for their boots/trunks), making them impossible to secure if a jammer is nearby.
A video posted on Facebook by Autumn DePoe-Hughes shows exactly this: In a car park at a Manchester shopping centre earlier this week, numerous drivers are left standing helpless as they can't secure their cars, while car alarms blare constantly.
Neil couldn't lock the car and was walking around trying to check them and I noticed that everyone was doing the same thing and a lot (literally) of car alarms were going off. Someone was jamming the signal of every car in the lot!Posted by Autumn DePoe-Hughes on Sunday, May 17, 2015
She added: "I went around speaking to people and they all confirmed that they could not lock their cars and couldn't figure out what was going on. They all thought their cars needed to be repaired."
The devices can be bought online for as little as £30, crime reduction specialist Darron Tickle told the Manchester Evening News last year. He also warned that if someone has used a signal jammer to steal things from your car, you may have difficulty claiming back insurance.
The potential uses of jammers go beyond vehicles. Anything that secures itself with radio signals - such as remote-controlled gate locks - are vulnerable to disruption.
We found multiple heavy-duty scanners for sale online for a few hundred dollars each:
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