An ignition interlock device, or car breathalyzer, is a discreet device installed in a vehicle to prevent drunk driving. The device requires a driver to pass a breath alcohol content (BrAC) …

An ignition interlock device or breath alcohol ignition interlock device (IID or BAIID) is a breathalyzer for an individual's vehicle. It requires the driver to blow into a mouthpiece on the …

Intoxalock is an approved interlock provider in 46 states. Talk to a state specialist today for step-by-step assistance.

What Is an Ignition Interlock Device (IID)? An IID is about the size of a cell phone and wired to your vehicle’s ignition. After installation, the IID requires you to provide a breath sample before …

An ignition interlock device (IID), also known as a car breathalyzer or “blow and go,” is a small handheld unit connected to a vehicle’s ignition system that measures breath alcohol levels …

Jun 25, 2025 · What Is an Interlock Device and Why Does It Matter? An ignition interlock device (IID) is essentially a mini breathalyzer that’s wired directly into your car’s ignition system. The …

Installing an Ignition Interlock Device (IID) on your vehicle is a common legal or administrative requirement for drivers after a DUI. An Interlock Device requires the driver to blow into the …

What Is an Ignition Interlock? Simply stated, an ignition interlock is a device installed on a motor vehicle that requires a breath sample to determine the driver’s breath alcohol concentration …

In simplest terms, an interlock device, or car breathalyzer, is an in-car monitor that prevents a user from starting a vehicle until a breath alcohol test is taken.

Wondering, "how does an interlock device work?", we’re here to help. Understand interlock device basics, plus get info on installation and maintenance.