Our smart card door lock series from Tinyuet adopts M1 cards which possess much higher working frequency than traditional ID cards. There is a special corresponding designation to every single card, so it is more difficult to be cracked or copied, greatly improving the security. In addition, our door lock can also be unlocked by fingerprint identification, password input, keys and more. As the manufacturer with a specialization in smart lock technology, we can provide you with fully customized smart locks based on size, color, and smart lock function.