The application of face recognition door locks in households is becoming increasingly widespread. For the elderly and children, it provides an extremely convenient way to enter and exit. The elderly may forget to bring keys or passwords due to memory decline. The face recognition door lock allows them to simply face the camera to open the door without complicated operations. Children can also enter and leave the house more conveniently without worrying about losing keys. At the same time, the face recognition door lock greatly enhances the security of the family. It can accurately identify the facial features of family members and effectively prevent strangers from entering. Moreover, its living body detection technology can prevent fraud methods such as photos and videos from unlocking, building a strong defense line for family security. When family users choose a face recognition door lock, price is an important consideration. They hope to obtain high-quality products within a reasonable budget. The brand is also a key factor affecting the decision. Well-known brands often mean better quality and after-sales service. In terms of functions, in addition to the basic face recognition function, some additional functions such as remote control and alarm reminder are also highly concerned. The appearance design needs to match the home decoration style to maintain the overall aesthetics of the home. Market research data shows that more and more families are beginning to prefer face recognition door locks with multiple functions and fashionable appearances.