Smart security: no application, no Bluetooth, no key. Fingers are friendly to children and the elderly, and are the key to preventing thieves from cracking the code. Simple and comfortable: With this smart lock, you can say goodbye to buttons and clumsy combinations. It can record up to 20 different fingerprints, which is very easy for you and your family. Safe, stable and portable: small size, light weight but strong. Protect your closet or home from thieves. Prevent broken, smashed or cut.