The bouncer and bartenders at Keys on Main have to stay alert for many potential problems, especially people drinking too much or minors trying to get into the bar. On nights when the line stretches ...

When you're talking about data collection, two technologies come to mind: bar code scanning and RFID (radio frequency identification). The former has been a staple in data collection for more than 30 ...

APPLETON, Wis.—Appleton police are using scanner technology to keep convicted criminals out of some of the city’s most popular bars, but critics are raising privacy concerns. Authorities claim ...

Often found at the checkout counter, laser scanners decipher information contained within bar codes, allowing a host computer to process data such as product names and costs. Projecting a laser beam ...

The plan to give away millions of free bar-code scanners, dubbed CueCats, isn’t going exactly purringly. Radio Shack, Wired magazine, Forbes and others have given away 10 million of the gadgets and ...