Anyone with some extra hardware and technical know-how could add value to the card, but FedEx says there's no risk.
http://news.com.com/FedEx+Kinkos+payment+card+cracked/2100-7355_3-6045389.html?part=rss&tag=6045389&subj=news
http://news.com.com/FedEx+Kinkos+payment+card+cracked/2100-7355_3-6045389.html?part=rss&tag=6045389&subj=news