If you want to reduce the interaction with the cashier when checking out at the supermarket, you can try the following methods: 1. **Self-service checkout**: More and more supermarkets offer self-service checkout services, which allows you to complete the payment by yourself with almost no interaction with the staff. 2. **Mobile payment or contactless payment**: Using mobile payment apps or the contactless payment function of credit cards can speed up the payment process and reduce the communication time. 3. **Short answers**: If the cashier greets you or asks you something, just give a short answer, such as a smile, a nod or a simple "thank you". 4. **Choose the right time to shop**: When shopping during periods of low customer traffic, the cashier may process your checkout faster and there will be relatively less interaction. 5. **Shopping list**: Make a shopping list in advance to ensure that you do not need to make additional inquiries or discussions about any items when checking out. 6. **Stay polite**: Despite the reduction in communication, maintaining basic courtesy can avoid unnecessary misunderstandings. This can effectively reduce the communication with the cashier while ensuring a pleasant and efficient shopping experience.