ABN Amro
ACI Worldwide
Acies
ActiveCore Technologies
Aizkraukles Banka
American Express
Amgen
A.R.C.
Bank Austria Creditanstalt
Bank of America
Bank Pekao
Barclays
BearingPoint
Card Express
Center for Financial Serv. Innovation
Chockstone
Citibank
Collective POS Solutions
Comerica Bank
CrediMax
Debix
Debt Resolve
DIB & Associates
Discover
DST International
eFunds
Envios de Valores La Nacional
Eurobank
Euronet Worldwide
Experian
Fair Isaac
Federated
Fintrax
First Bank of Delaware
First Data
First Nat'l Merchant Solutions
Fiserv CBS Worldwide
GE Money
Giro Bankcard
Global Payments
Gulf Bank
Hansabank
Home Depot
HP
HSBC

I4Commerce
Infineon Technologies
Ingenico
Inside Contactless
Interac Association
ISD Corp.
Javien Digital Payment Solutions
JCB International
KeyCorp
Majid Al Futtaim Group
Mashreq Bank
MasterCard
Mellon Group
Microsoft
MK Technology
NACHA Payments
National Bank of Dubai
Network International
Ogone
Online Resources
Optimal Payments
Orix Corp.
OTP Bank
PBZ Card
Perfect Plastic Printing
Sagem Orga
Shore Cliff Communications
Size TEchnologies
Smartclixx
SSB Group
Terrapinn
TNB Card Services
TransUnion
Triton
UFJ NICOS
Unicredit
USAA Federal
Valista
Ventus Networks
VeriFone
Visa
Washington Mutual
Welcome
Western Union
Wireless Payment Services