Shoppers expect the tags on Wal-Mart items to have rock-bottom prices. In the future they may also have information about the product’s carbon footprint, the gallons of water used to create it, and the air pollution left in its wake. [via NYTimes]
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LOOK closely at recent supermarket coupons, and you may see some markings on them near the traditional bar code: sets of neat black bars stacked in two rows. The new symbols, called GS1 DataBars, can store more data than traditional bar codes, promising new ways for stores to monitor inventory and for customers to save [...]