Abbey
ACI
Air Miles
Akbank
Alliance & Leicester
Alliance Data
American Express
BancoPosta
Bank for Int'l Settlements
Bank of America
Bankrate
Barclays
BBVA
Bloom/Cogar Consulting
BNP Paribas
Byte Tech
Caisse d'Epargne
Caixa Geral de Depositos
Caja Madrid
Canadian Acquirers Assoc.
Capital One
Cardlogix
CartaSi
Castles Technology
Central Comm. Bureau
Chase
Chevron FCU
Citibank
Co-operative Bank
Comdata
Commercialbank of Qatar
CPI Card Group
Credit Agricole SA
Credit Mutuel
Credit Suisse
CyberSource
Cynergy Data
Deutsche Bank
Diners Club
Discover Financial Services
Disney Credit Card Services
Dresdner Bank
Electronics Today
Equifax
Experian
Fair Isaac
Federal Reserve/Boston
Ferlo Senegal
First American Pay. Sys.
First Data
Garanti Bank
GE Money
Gilbarco
Globalcard
Group Santander
HBOS

HPS
HSBC
Hypercom
i2c inc
ING/Postbank
Innova Card
Innovative Card
Integri
JCB International
JPMorgan
La Banque Postale
La Caixa
Le Credit Lyonnais
Lloyds TSB Bank
Magenta Global
Mall Networks
MasterCard
Mercatus Partners
Merchant Cash Express
MetaBank
Mobilians International
Nationwide Building Society
Nordea
Obopay
Payment Innovations
PayNet Transactions
Pelorus Group
PIC Solutions
Pipeline Data
PKO Bank Polski
Postilion
ProfitPoint
PSCU Financial Services
Radius Travel
Raiffeisen Zentral Bank
RapidAdvance
RBS/NatWest
Sedgwick CMA
Smart Transaction Systems
Source One Direct
Spectra Technologies
Strategies Telecoms
Swedbank
Texas Instruments
The Strawhecker Group
TSYS
Tyburn Group
U.S. Bank
UBS
Velocity Payments
VeriFone
Visa
Western Payments Alliance
Western Union
Yapi Kredi