On The Fly Price Comparison

two companies showed off their Android applications. Big in Japan showed ShopSavvy, a neat tool that scans a bar code and then searches the web and local stores for the same item

That's a pretty good idea. I have thought something like that would be useful when considering a purchase. If you aren't tuned in to the price point for an item you are considering purchasing (probably as an impulse), you can very quickly get a readout on what is a good price. Of course, as with so many things, the business model seems like a great big question mark.