Count Calories With Bar Codes

This doesn't use a mobile phone yet, but it shows how barcodes can be used for more than price comparison.

Training Peaks, LLC, the leading provider of online training technology for endurance athletes and coaches, has developed the Calorie Scanner™, a cutting edge nutrition tracking system.

Ideal for anyone interested in monitoring their caloric intake, from professional athletes to business professionals, the Calorie Scanner fits on a keychain, in a pocket or purse. The database recognizes over a half million UPC bar codes and includes nutrition information for 50,000 “branded” foods, allowing the user to track calories per serving on the go or right in their kitchens