Two-factor authentication (2FA) is an essential security measure for protecting online accounts, and Time-Based One-Time Passwords (TOTP) are one of the most widely used methods. While mobile apps like Microsoft Authenticator, Google Authenticator, and Authy dominate the space, some users prefer a desktop alternative. SecondFactor is a lightweight TOTP authenticator for Windows that provides a simple and efficient way to manage 2FA codes directly on your PC.
Minimalistic 2FA Program
SecondFactor is designed to be minimalistic and easy to use. It is available in both a setup package and a portable version, allowing users to choose between a traditional installation or a no-installation needed approach.
The program’s compact user interface makes it convenient to place in a corner of the screen while scanning QR codes displayed in a web browser. This is particularly useful when enabling 2FA for online accounts like Google, where a QR code is shown to link an authenticator app.
Adding Authenticator Profiles
To add a 2FA profile, simply click the QR button in SecondFactor. The program then scans the QR code displayed on the desktop, extracting the necessary secret key and configuration details. Once added, the profile is stored and accessible through a drop-down list in the user interface.
For users who prefer manual entry, SecondFactor also allows adding profiles by entering details such as: Service title (like Google, Outlook etc.), secret key, number of digits (6 or 8), time period (such as 30 seconds), hash type (SHA-1, SHA-256, SHA-512) etc. Profiles can be edited or deleted at any time by clicking on the Authenticator Profiles button.
Generating and Viewing Codes
For each selected profile, SecondFactor displays three TOTP codes: previous (for slight time discrepancies), current (the active code), future (to anticipate the next code). This feature helps avoid login failures due to timing mismatches. Unfortunately, a copy-paste button is missing, meaning users must manually type the code when logging into their accounts.
Backup and Security Features
SecondFactor supports backup and restore functionality, ensuring that authenticator profiles are not lost in case of system changes or re-installation. Additionally, profiles can be password-protected, preventing unauthorized access to stored 2FA codes.
Conclusion
SecondFactor is a practical and lightweight TOTP authenticator for Windows users who prefer managing 2FA codes on their desktop. While it lacks some conveniences like a copy button, its small interface, QR code scanning, and security features make it a great alternative to mobile authenticators.
You can download SecondFactor from https://realityripple.com/Software/Applications/SecondFactor/.