A 
system including a computerized shopping 
cart that includes a closed mechanical 
cart (1) which interconnects / disconnects to units for the 
insertion / storage of products upon manual command managed by a shopping computer aimed at managing shopping problems and controlling all electronic functions, i.e. automatic 
system for optically scanning (7) bar codes (UPC / EAN standard), one for checking (8) the 
correctness of the customer's operations, one emitting the intelligent 
multimedia commercial message, one for the 
wireless exchange of data with the outside, for use in supermarkets. The 
system provides shopping info (8) (
list of products on sale, location, price, other), or of the product being purchased (price, whether it is on sale, partial groceries bill), or already purchased (
list of purchased items) or to be purchased (remaining shopping 
list), guided by appropriate interactive messages (acoustic, visual.