In most parts of the world, there are very few, if any, features to your standard shopping cart. The purpose of a shopping cart is simple, and therefore the design is simple. However, in Sweden, they have maps of the supermarkets placed on the shopping carts so people can easily find their way through the stores. This is a life-saving design for anyone who is directionally challenged and has gotten lost in a supermarket.
Not only do they have the maps installed on the shopping carts, but they also have a place specifically to hold a scanner—simple changes making significant differences.