After the silver button is pressed during the programming process, the BenjiLock requires 5 successful attempts at registering your fingerprint, if the attempt was successful you will see a Blue LED light, you should see 5 Blue lights in total during this process. If a Red LED Light appears it means the attempt was unsuccessful if this happens, remove your finger and place it on the sensor again. Repeat the process until you see the Blue LED light 5 times.
If a Red LED light flashes after the fifth Blue LED light, it means the fingerprint is already registered in the lock. The same fingerprint cannot be registered more than once unless previously deleted.