First, the project context has emerged as a new retail business, with the rapid development of technology and changes in consumer shopping habits. The lemon lodge project was launched with the aim of providing consumers with easy and efficient shopping experiences through smart means such as advanced self-help settlement systems, face recognition techniques and physical networking. Ii. Project characteristics unmanned, self-shopping: the lemon shop uses an advanced self-help settlement system, customers can enter the shop for identification by brushing their face or swipe codes, select goods and leave the shop directly after purchase, and the system automatically settles deductions without waiting in queues. Advanced technology, safe and secure: the project uses advanced technologies such as big data, cloud computing and artificial intelligence to analyse consumer purchases and achieve precision marketing. The shop is equipped with high-resolution surveillance cameras and smart pira...