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Fully Accredited Alcohol Interlock Systems
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State Interlock Programs/Schemes

Discover Each Australian State & Territory’s Alcohol Interlock Programs and Schemes. In Australia, each state provides direction on how interlock programs operate. Important factors can differ between states, click here to learn more about the rules for each Australian state & territory’s Alcohol Interlock Programs and Schemes.

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Private Interlock Systems

Find Out How to Install a Private Alcohol Interlock System. If you are looking for a new Private Interlock System for your employees, follow the link below to learn more about the products available to get you started.

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About Us

Guardian Interlock manages alcohol interlock programs/schemes on behalf of various state transport authorities in Australia and offers Interlock solutions to safety conscious businesses and individuals.

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Service Centres

Guardian Interlock has a vast network of Service Centres across Australia for interlock installation, interlock services and interlock removal. To find your nearest Service Centre, click on your state of residence.

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Service Centre Login

Login to access Guardian’s Service Centre portal to order stock or access Documentation. If you do not know you login please contact us.

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News
May 21, 2018

Download the new app now !!!

The new Guardian app will help you when you are on the go. Finding you nearest service centre or help with your interlock messages is now at your fingertips !!

Latest News

January 28, 2026

What To Expect In Your First Month On An Alcohol Interlock Program

Starting an alcohol interlock program can feel overwhelming, especially in the first few weeks when everything is new.  Guardian Interlock focuses on making that first month as clear and structured as possible…
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December 19, 2025

Tips To Avoid Failed Or Positive Interlock Readings (Even If You Haven’t Been Drinking)

Unexpected interlock readings can be frustrating, especially when you haven’t had a drink and you’re doing everything right. Yet many drivers are surprised by how easily everyday habits, products, and routines can…
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December 10, 2025

Interlock Devices In Shared Vehicles: Legal and Practical Tips For Families and Carpoolers

For many Australian families and carpoolers, sharing a vehicle is second nature, essential for juggling busy lives. But when an alcohol interlock device is required by law, suddenly, the dynamics of using…
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