Yubi AppGate

The only Android app lock powered by a real security key. Lock any Android app with your YubiKey - no passwords, no PINs, no biometrics. Just tap your key via NFC or plug it in via USB to unlock instantly. 🔐 HOW IT WORKS • Enroll your YubiKey in seconds (NFC or USB) • Choose which apps to protect • Open a locked app → authentication prompt appears • Tap your YubiKey → app unlocks immediately 🛡️ REAL HARDWARE SECURITY • Uses HMAC-SHA1 challenge-response (hardware-backed authentication) • Trust On First Use (TOFU) — no secrets entered manually • Fully offline — no cloud, no servers, no accounts • Works with YubiKey 5 series and compatible keys • Built for security professionals and privacy-first users ⚡ FEATURES • Lock any app on your device • NFC tap or USB authentication • Select apps individually • Smart cooldown (no constant re-prompts) • Works from launcher, notifications, and lock screen • No ads, no tracking, no analytics 💡 FREE & PRO • Free: protect up to 2 apps • Pro: one-time upgrade for unlimited protection 👤 WHO IT’S FOR • YubiKey owners • Privacy-focused users • Developers and security professionals • Anyone protecting sensitive apps (banking, messaging, email) 📋 REQUIREMENTS • YubiKey with HMAC-SHA1 configured (via YubiKey Manager) • NFC-enabled device or USB OTG • Android 7.0+ 🔍 IMPORTANT NOTES • Uses Accessibility Service to detect and protect app launches • All authentication happens locally on-device • No data leaves your phone • Truly lock down your device by adding Android Settings to the AppGate. • For more information and support: https://appatalks.github.io/Yubi-AppGate/ Yubi AppGate is not affiliated with or endorsed by Yubico. YubiKey is a trademark of Yubico.