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.