Want to know if that CD you're about to buy is cheaper online? Point your iPhone at the bar code and in seconds this app will look up competing prices. Rick Broida is the author of numerous books and ...

Universal Product Code apps for the iPhone let shoppers find additional information and perform price comparisons on products while inside a store. They also let allow an iPhone to serve as a front ...

Some technologies you use every day, but without thinking about them. The bar code is one of these: everything you buy has one of these black and white striped codes on it. We've all seen how they are ...