Second Factor - Hardware OTP for Android - Download Free [Latest Version + MOD] 2025

Whats new in Second Factor v1.3

6 things about Second Factor - Hardware OTP

1. * NOTE: Application supports only modern yubikeys with TOTP CCID support (for example Yubikey 4, refer to manufacturer documentation).
2. Designed with security in mind this 100% native application lets you generate OTP codes for all services with TOTP second factor.
3. This application uses Sandboxing feature, and not requires network access - so it is guaranteed by operating system that your keys or authentication codes will not leak anywhere via network.
4. * NOTE: You need to have Yubikey device to generate codes.
5. Please note: if yours hardware key contains any of not-yet-supported OTPs - they will not be shown in this application.
6. Yubico and YubiKey are registered trademarks of Yubico Inc.

Release date: 2023-11-05
Current version: 1.3
File size: 3.39 MB
Developer: Y.Lukyanets

How to setup Second Factor APK:

APK (Android Package Kit) files are the raw files of an Android app. Learn how to install second-factor-hardware-otp.apk file on your phone in 4 Simple Steps:

Download the second-factor-hardware-otp.apk to your device using any of the download mirrors.
Allow 3rd Party (non playstore) apps on your device: Go to Menu » Settings » Security » . Click "Unknown Sources". You will be prompted to allow your browser or file manager to install APKs.
Locate the second-factor-hardware-otp.apk file and click to Install: Read all on-screen prompts and click "Yes" or "No" accordingly.
After installation, the Second Factor app will appear on the home screen of your device.