The Biometric Lock with PVC rubber cover and reinforced steel cable can secure your bicycle wherever you have parked it. With a 500-millisecond fingerprint recognition, and up to 6 months of battery life, the smart lock guarantees safety and robust anti-theft measures. To set your fingerprint, first Unlock the lock with using any finger print. Then Hold your finger on the scanner for 6 seconds. Blue light will flash to indicate that the lock is ready to accept fingerprint. Once the blue and green light is flashing, place your finger on the scanner. When the scanner accepts the fingerprint, it will flash green light. It means the fingerprint is noted. Total 10 collections are required to complete the process. Please the fingers in multiple angles to increase the accuracy of the lock. Once the 10 collections are completed, the green light with flash to indicate process completion.