from Mal-Aware.org

The ExpressPay stored-value card system used by FedEx Kinko’s is
vulnerable to attack. An attacker who gains the ability to alter the
data stored on the card can use FedEx Kinko’s services fraudulently
and anonymously, and can even obtain cash from the store.

FedEx Kinko’s fired back saying

According to Fedex Kinko’s:
“Our analysis shows that the information in the article is inaccurate
and not based on the way the actual technology and security function.
Security is a priority to FedEx Kinko’s, and we are confident in the
security of our network in preventing such illegal activity.”

So the hackers had an interesting response….