PSBR : Item and price searcher

By taking a picture of a barcode with a camera(barcode reader), you can search for the applicable item. The item's LOWEST price as well as the item description.　And when it's cheaper than the item you have seen at a store, you can buy it on the spot.
Moreover, when you swipe the screen, you can search for the similar item from the shop list. You can also search for other items from the same manufacturer. You may also find items like, for example, STRAWBERRY flavor or CARAMEL flavor of the item that you have.
If you're on a trip and you want to buy a souvenir you found at certain shop, you can easily purchase it online even if you don't know its name. Plus you don't have to worry about carring too much of baggage.