What is an authenticator app?
An authenticator app is a mobile application that provides extra security for your online accounts by generating random one-time codes. They are used for accessing online accounts with multi-factor authentication enabled, such as Employer Online.
Authenticator apps are generally considered more secure than receiving a code by SMS or email.1 Microsoft Authenticator and Google Authenticator are examples of popular and free authenticator apps.
Find out how to download an authenticator app.
1. Source: Australian Signals Directorate’s Australian Cybersecurity Centre, Protect yourself: multi-factor authentication, accessed July 2025.
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