Interlock devices in criminal justice

An interlock device is a breathalyzer installed in a vehicle that prevents the engine from starting if it detects alcohol in the driver’s breath. It is often used as a court-ordered tool for individuals convicted of driving under the influence (DUI), aiming to reduce repeat offenses. The device requires the driver to pass a breath test before operating the vehicle and may also prompt periodic tests during driving. This technology helps ensure the driver remains sober behind the wheel, supporting legal compliance and public safety.