Well, I guess it was only a matter of time before this type of app was released:
http://www.scmagazine.com.au/News/305881,android-app-steals-contactless-credit-card-data.aspx
All I can say is, you better buy and put your cards in a wallet/container that blocks NFC (near field communications) signals.
Regards,
Roger Lacroix
Capitalware Inc.
