5-in-1 Smart Keyless Entry Door Lock The Blusafe WiFi smart door lock provides multiple ways for you to enter keyless: APP Remote Control: When someone rings the doorbell, take a picture and notify you immediately. When you know who is at the door, you can remotely open the door for him even when you are not at home. Note: the remote unlock function is passively triggered by ringing the doorbell on the smart lock. Fingerprint: Your finger is your key, it can accommodate up to 100 fingerprints Passcode: Unlike the button keyboard, the hidden keyboard is not easy to wear and tear, effectively protecting your password. it can accommodate up to 100 passcodes. RFID Keycard&Mechanical Key: Traditional solution for emergency.(2 RFID keycards and 3 mechanical keys are included.)