Lockin halo is the first automatic smart lock with palm vein recognition function. It has the best door opening experience, and the flowing lighting strip guides the users to open the door. It has a 16mm ultra-thin panel made of aluminum forging, which is better integrated with the door and the environment. Palm vein biometrics are the most difficult to copy, and they have obtained EU GDCP certification in terms of privacy, which is more secure. It can be used by users over 4 years old. It can be successfully verified by reaching out and not touching it, which is more convenient.