Building Secure IoT with Flutter Biometrics — Introducing biometric_iot_bridge

Hey Indie Hackers 👋

I’ve been working on a new open‑source Flutter package called biometric_iot_bridge. It’s designed to make IoT interactions more secure by requiring biometric verification before triggering device actions.

🔐 How it works:

User verifies with fingerprint or Face ID

A cryptographic token is generated locally

Token is published securely via MQTT

IoT device executes the trusted action

✨ Why it matters:
Passwords and sessions can be compromised. Biometrics are hardware‑bound and device‑local, making them a stronger trust gate for IoT systems.

💡 Use cases:

Smart locks

Industrial IoT equipment

Healthcare devices

Connected vehicles

Smart home automation

✅ Cross‑platform (Android, iOS, Windows, macOS)
✅ MIT License
✅ Free on pub.dev

I’d love feedback from this community:

How do you see biometrics fitting into IoT adoption?

What pitfalls should I watch out for when developers integrate this into production systems?

Any ideas for real‑world applications you’d like to see tested?

👉 Full details here: https://www.seosiri.com/2026/02/biometric-iot-bridge.html