Abstract: An interactive shopping system and method for use in a retail store. The system can include a removable sleeve which can be attached to a shopping cart or basket. The system can have a scanner for reading product codes and retrieving information on specific products and an onboard scale to match the product weight as products are placed in the cart or basket. A processor can be in communication with a network and configured to match products codes in real time to a store library of products. A display can be used to market products that might interest the user based on the user's shopping list and shopping history at the store. A light array and alarm system can be mounted to the removable sleeve to provide a visual or audible alarm to indicate the status of payment or nonpayment of products in the cart or basket.