Chameleon Network, in Concord, Massachusetts, plans to replace the stacks of credit, bank and customer-loyalty cards burdening modern consumers with a single, rewritable Chameleon Card, which works just like an ordinary card with a magnetic strip. The Chameleon Card's black strip covers a programmable transducer that mimics the information on the magnetic strips of the cards it is replacing. A new handheld device from Chameleon, the Pocket Vault, programs the Chameleon Card to take the place of any credit card the consumer chooses for a transaction. Shoppers will be able to swipe their Chameleon Cards through the same magnetic readers used in stores and banks today. And instead of reading bar codes off the back of customer-loyalty cards, retail bar-code readers will scan the bar code displayed on the Pocket Vault itself. Full story over at Wired News.