An Ignition Interlock Device (IID) is a compact device, roughly the size of a cell phone, that plays a crucial role in preventing drink driving incidents. It is connected to your vehicle’s ignition system. Once installed, the IID operates by mandating you to provide a breath sample before your car’s engine can be started. Here’s how it works in more detail: When you attempt to start your vehicle, the IID’s sensor checks the breath sample you exhale. If it detects any alcohol on your breath, even in minute amounts, the engine will remain immobilised, preventing the vehicle from starting. This technology acts as a safeguard, ensuring that individuals do not operate their vehicles under the influence of alcohol, enhancing road safety.