Sam supermarkets adopt membership system mainly to provide more accurate and personalized services. Membership system can ensure the long-term and stable relationship between supermarkets and consumers in Sam. Members can enjoy certain discounts and discounts when shopping, but non-members can't enjoy these discounts.

The membership system is also helpful for Sam supermarkets to collect and analyze consumers' shopping habits and demands, so as to better adjust the types of goods and inventory to meet consumers' needs. So although Sam supermarkets don't have to be members to enter, only members can buy goods, which is a strategy adopted by Sam supermarkets to improve service quality and consumer experience.