Tips for preventing the theft of your vehicle - beware of signal amplification devices

Posted On Thursday July 23, 2020
Signal Amplifier - courtesy of Toronto Police
Signal Amplifier - courtesy of Toronto Police

FOR IMMEDIATE RELEASE: Thursday, July 23, 2020   2:15pm 

(Ottawa) – The Ottawa Police Service recently noticed a 42 Division of Toronto Police Service public advisory about a number of overnight vehicle thefts from driveways occurring in Toronto, where vehicles with a keyless entry system or FOB system are being targeted. 

In these most recent thefts, the thieves are using a signal amplification device.  

How this device works

It is believed that thieves stand near the front door of a house, holding a device that captures the signal emitted from the keyless FOB. This device is the radio frequency amplifier that will increase the signal range of the keyless FOB.

A second person stands near the vehicle and receives the signal from the device, unlocking the vehicle. The radio frequency amplifier can also be used to start the vehicle (see photo courtesy of Toronto Police).

Please see the Toronto Police posting of a Caledon OPP security video of such a device being used. 

Our investigators have not yet seen the use of signal amplifiers in Ottawa. In the event that this technology makes its way to Ottawa, a simple line of defense is to consider keeping any vehicle with a proximity key fob inside a radio frequency shield (RFS), commonly known as ‘Faraday pouch’.  This will prevent the key fob’s signal from being amplified to the vehicle from inside the house protecting it from being driven away. 

More proactive tips to help you protect your vehicle:

  • Consider using anti-theft devices such as car alarms, steering wheel locking devices such as "The Club", and electronic immobilizer devices; all can act as a strong deterrent!
  • GPS tracking units have become increasingly popular and some allow the vehicle owner to electronically "fence-in" their vehicle whereby an alarm cue would occur if the vehicle were to leave the fenced-in area without authorization.
  • If possible park your vehicle in a locked garage and or block it in tightly with a second vehicle.
  • Putting security lighting and video surveillance cameras on your home may discourage thieves.
  • Do not leave the vehicle running while unattended.
  • If you are selling your vehicle, be wary not to let anyone have access to your car keys or your vehicle out of your sight. This prevents a thief from copying your key during a “test drive” so they can return later to steal it.

Finally, good old-fashioned neighbourhood watch. If you see something suspicious, do not engage the suspected thieves, call 911, and be vigilant!

Anonymous tips can be submitted by calling Crime Stoppers toll-free at 1-800-222-8477 or at


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