Working at the checkout counter, you have the opportunity to offer customers the possibility of joining the store's loyalty programs.
As you ring them, you can talk about its advantages, which usually include earning points, coupons, or access to exclusive sales and events.
In that way, you add value to the company and customers.
Photo from Canva.
Reference: How to Use Your Checkout Counter to Make More Sales by Kali Hawlk on Shopify