ESP32-based Smart Biometric Attendance System using R307 fingerprint sensor, Firebase RTDB, React Dashboard, Google Sheets, AES encrypted backup and disaster recovery support.
iot arduino firebase reactjs esp32 fingerprint google-sheets embedded-systems cybersecurity blynk attendance-system biometric blynk-iot-platform wokwi iot-based-project esp32project
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Updated
May 10, 2026 - C++