Everything You Need to Know About Authenticator Apps for 2FA

We live in a time when adding an extra layer of security to our files, devices, and accounts has become essential. While many rely on PINs and passwords, authenticator apps are gaining popularity as a robust security solution. These apps (mobile or desktop) produce time-based one-time passwords (TOTP) to facilitate two-factor authentication (2FA). Authenticator apps add an extra layer of security to login processes by requiring a unique code. 

For those new to this technology, now is the ideal time to explore its advantages and discover some of the leading authenticator apps on the market. After all, a little extra security can go a long way in safeguarding your online presence. 

How do authenticator apps work? 

Authenticator apps mainly function like text-based two-factor authentication (2FA). However, instead of receiving a code through a text message, the code is generated within the app. This code typically refreshes every 30 seconds, enhancing security measures. Certain authenticator apps also offer a push notification feature that allows you to confirm your login attempt instead of having to remember and input a six-digit code. However, this functionality is unavailable in every authenticator app; not all websites and applications have adopted it. 

To begin using the authenticator app on any platform, let’s take Instagram as an example: 

1. Navigate to Settings > Password & Security > Two-Factor Authentication > Authentication App. 

2. Instagram will prompt you to open your authenticator app, which will automatically add your Instagram account. 

3. Your authenticator app will generate a 6-digit code. Enter this code into Instagram to complete the setup. That’s it! You’ve now added an extra layer of security to your Instagram account. 

Note: While many online platforms have not yet adopted authenticator app support, popular services like Google, Facebook (now Meta), Twitter, and Microsoft actively encourage their use for enhanced security.  

Benefits of authenticator apps  

• Enhanced security: Even if a hacker steals your login credentials, they’ll still need the unique code from your authenticator app to access your account. It also provides a significant advantage over SMS-based verification.  

• Works offline: Authenticator apps function independently of internet connectivity, ensuring security even when you’re offline. This means you can use them anywhere, anytime. 

• Improves user experience: Authenticator apps provide a seamless and convenient way to add an extra layer of security. With a simple tap on your phone, you can generate the required code, eliminating the need for additional devices or services. 

Popular authenticator apps 

Google Authenticator 

Google Authenticator is a popular and user-friendly two-factor authentication option. This free app seamlessly integrates with your Google Account and is accessible on Android, iPhone, and other web platforms. 

Once you sign in, you can start storing codes that will sync across all your devices. The app’s intuitive interface makes it easy to navigate, even for beginners. You can manually organise your codes by tapping and holding each entry to rearrange them on the screen. Additionally, you can secure the app with biometrics, such as facial recognition or a fingerprint. 

Microsoft Authenticator 

Microsoft Authenticator offers a similar experience to Google Authenticator but with a stronger integration into Microsoft’s extensive range of services. The app is compatible with all platforms (iOS/Android) and features a clean and straightforward interface that complements other Microsoft software. Like Google Authenticator, it is completely free to use, and while a Microsoft account is not required, signing in grants access to the app’s powerful password manager. The app also offers advanced security features like biometric fingerprint authentication to protect your security codes. 

Aegis Authenticator 

If you’re looking for an alternative to mainstream authenticator apps, Aegis Authenticator provides easy-to-use multi-factor authentication tokens for Android users (note that there are no desktop, iOS, or wearable versions available). Creating a new token is simple. You can easily link your online accounts by scanning a QR code, uploading an image, or manually entering a code.  

The free app goes beyond basic 2FA management by providing backup and synchronization features. You can securely back up your authentication tokens locally or to your Google Drive, ensuring easy device transfer. Backing up your authentication tokens is crucial to prevent access issues when switching to a new device. To import your tokens to your new Android device, install Aegis, select the import option from the settings, choose your backup file, and enter the encryption password. This process allows you to use Aegis on multiple Android devices seamlessly.  

Distilled 

This guide has explored the world of authenticator apps, highlighting their role in improving digital security. As you consider your options, take the time to evaluate which app aligns best with your needs and preferences. Integrating an authenticator app into your security checklist can significantly boost your protection against unauthorised access. You can enjoy greater peace of mind in your digital life with the right choice.