Shopping Carts = Nutritionist?

Apparently grocery stores in London wil soon be fitted with intelligent shopping carts that have electronic barcode scanners that calculate the nutritional content of the food you have  filled it with letting them know when they have blown their caloric budget. 

The touch-screen monitor will read each product's individual code to give customers information about calories, nutrition, ethical sourcing and the environment.

No longer will you have to think for yourself, shopping carts will let you know when you have chosen too much junk food completely revising your grocery shopping list.

Reference:  Yahoo News Online, October 11, 2007