One of the , which is testing the use of magnetic stripe technology to create unique digital fingerprints for cards, said Ellen Richey, Visa's chief enterprise risk officer. Each stripe contains unique characteristics that can be captured and used to verify the digital identity of the card, Richey said during at a security event being hosted by Visa today. The goal is to stop the creation and use of counterfeit cards based on stolen payment card data.

Another initiative, being piloted by retailer OfficeMax Inc., involves the use of a challenge-response technique . The project is aimed at testing the efficacy of asking consumers to respond to specific questions such as their ZIP code, the last four digits of their phone numbers, or the first three digits of their area codes, as part of the transaction approval process.

Dan Roeber, vice president and manager of merchant PCI compliance at Fifth Third, said the bank had rolled out about 1,000 card readers to retailers who have not been informed about the pilot effort. The terminals are capable of reading the magnetic stripe information and creating a "DNA picture" of the card which is then matched during the authorization process, against baseline information for that card stored by the card issuer, he said during a panel discussion at the event Thursday.

During the pilot process, baseline images or fingerprints for a card are created when it is first swiped through one of the new readers, Roeber said. But going forward, if the approach works, baseline images for each card could be created and stored during the card issuing process itself, Roeber said. "Even if somebody gets into a database and makes fraudulent cards, the DNS fingerprints are not going to match," Roeber said. "The thing I really like about this technology is that there are no key management issues," as is the case with the use of end to end encryption for protecting cardholder data.

"We are very excited about this technology," he said.