the christmas season has become the retail super bowl. reporter: the big story this year was not so much what we bought but how we bought it. you re going to be walking into a store with your phone. you see a good. you scan it with your phone, check the price. if you like it, boom, you ll pay for it with your phone. reporter: santa, in the digital age ahead from sunday morning. reporter: this is seth doane. in the season for shopping, the shopping bag plays a supporting role. where do you find all of these bags? we found a lot of them on e- bay. these we bought through our dealers. reporter: art dealers sell shopping bags? well, they sell it as art. reporter: unwrapping the story of this practical and pretty invention. later on sunday morning. osgood: albert brooks is known far and wide as a very funny actor and director. so what s behind his latest movie role as a very menacing bad guy? this morning mo rocca grills him on that subject and more. kid, i w