1.   He has also invested in self-service cash registers that allow shoppers to scan their own purchases, all in the interest of improving their experience in the store.

2.   Instead of cashiers scanning purchased items at the checkout counter, shoppers scan in each item they place in their shopping carts.

3.   New machines allow shoppers to scan their own groceries.

4.   On average, each store uses four of the self-checkout systems, which allow shoppers to scan and bag items, then choose their method of payment.

5.   The Peapod software allows shoppers to scan for sale items, compare products based on cost per ounce or unit, and use coupons.

6.   The site also let shoppers scan book reviews by other readers and encouraged them to submit their own.