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What is the Ignition Interlock Device?

The ignition interlock device is a device that is installed by a private corporation into vehicles that does not allow the vehicle to start if the blood alcohol concentration of the person blowing into it is over zero. In effect, it is an electronic lock-out mechanism that requires a pre-condition to starting the car by providing a breath sample into a device. The devices do tend to be calibrated at 10 to 20 milligrams of alcohol just in case there is something like mouthwash existing. Our advice is, and what you will hear from the manufacturers is, if you have any concerns – don’t blow into your ignition interlock device before attempting to start you car. They are recorded and they are downloaded every month by the manufacturer and provided to the Ministry of Transportation and may lead to a loss of licence.


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