Forbes.com has published an article from its upcoming print edition on technology brand owners are using to stop counterfeiters. The article highlights Kodak's Traceless System, a forensically invisible authentication technology, being used by sports trading-card company Donruss to provide collectors with authenticity:

"In some cases, we couldn't even tell what was real and what was fake," said Scott Prusha, spokesperson for Donruss. "There was clearly a problem." Fans aren't going to pay an extra $15 to $1,000 for a trading card if they aren't confident the thing is real.

To squelch the pirates, Donruss this year embedded an invisible marker into its cards, a trace amount of a chemical made by Eastman Kodak. Anyone questioning the authenticity of a trading card can send it to Donruss to be scanned by a device that detects the chemical's presence. The nature of the chemical is a secret. All the Kodak people would say is that it's made of small inorganic particles.

Read the rest of Fighting Fakes at Forbes.com