The smart door lock supports biometric fingerprint/password/IC card/mechanical key/App multiple unlocking methods. Uses live fingerprint recognition technology to improve the accuracy of fingerprint recognition. Add random digits to protect your passcode from prying eyes. You can type in any number of random digits on the keypad,and can still gain access as long as the 1 correct password is embedded in the longer set of numbers. The IC Card door lock has a built-in high-sensitivity card reader chip. high recognition rate and accuracy. The smart door lock supports two emergency unlocking methods, mechanical key (old-fashioned unlocking method) unlocking and USB emergencypower supply. When the door lock is out of power, you can use the power bank to charge the charge, Manufacturer: DMETE