A recent case in Manchester shows how fragile we rely on RF. In this example, the use of simple auto-jammers that attempted to enter the car lids in the parking lot caused confusion where no one could unlock / lock the remote locks and eventually trigger multiple alarms.

North American car locks are running in the 315MHz range, which operates in Europe and Asia in the 433MHz range. While signal jammers are illegal in most countries, in many places, the sale of these devices will usually block the frequency from about $ 50 to $ 200 depending on equipment and quality.

In order to reduce the risk to the vehicle locking devices, it is important that they observe and / or listen to the notes that occur during the reception of the signal jammer http://www.jammer-buy.com/jammer-blocker-devices/c-1.html . Manual locking is certainly not affected, so if you are too worried, you can cover the remote control and the manual, but some newer vehicles do not offer this option.