For decades, retailers and manufacturers have used these patterns of black dots, lines, and squares to encode pricing and other data onto products and supplies. Now, bar codes are gaining currency as an easy way for cell-phone users to view ads, coupons, and other information instantly.
The Weather Channel is using bar codes to deliver maps, forecasts, and severe weather alerts. Universal Pictures is using mobile bar codes to promote its coming thriller Repo Men. Later this month, a Hearst magazine will use the technology to provide additional information to readers. And mobile bar code technology in various forms has recently been used by Google, Yahoo!, Nike and Frito-Lay.
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