I built an encrypted BLE dongle for pasting stuff to air-gapped devices

This project is a custom Bluetooth Low Energy (BLE) dongle that securely transmits encrypted text (like BitLocker keys) to air-gapped computers, acting as a wireless, encrypted alternative to a USB rubber ducky. It is designed for security-conscious IT professionals and system administrators who need a quick, physical way to input sensitive data into isolated machines without compromising network security. Its interest lies in the escalation from a simple 20-minute tool to a robust device featuring AES-256 encryption and planned WebAuthn/FIDO support, solving a niche but critical security workflow.