With technology advancing every day, people are now less motivated to use the old school keys. From E-Keys to the fingerprint unlocking system, there are several new technologically smart ways to unlock doors Bravo smart Lock x3 offers Multiple door opening modes with advanced fingerprint recognition, contactless cards and passwords are more convenient. Supports for Tuya function, and it can be remotely unlocked by connecting to the phone via WiFi. Support fingerprint, IC card, password, mechanical key and mobile APP to open the door, and you can also view the unlocking history through APP. The addition and deletion of fingerprints and passwords are managed based on the unlock number. When you forget to replace the battery and cannot open the door, USB emergency power can help you.