Aconite
Advanta
Alliance Data
Alltel
American Express
Apriva
AT&T
Bank of America
Barclays
BB&T
Belk Stores
BPC
Cabela's WFB
Capital One
Cellular South
Center of Financial Techs.
CGI Group
Charge-Anywhere
Chevron
EIMB Bank
Citgo
Citigroup
CompuCredit
ConocoPhillips"Credit One Bank
Cubis Financial
DataX
Dillards
Discover Financial
eCommLink
Equifax
EVO Merchant Services
ExxonMobil
FiCentive
Fifth Third
First National
FirstBank of Delaware
GE Money
Global Cash Card
Hangzhou Sunyard Tech.
Heartland Payment Systems
Home Depot
HSBC
i2c inc
Ingenico
InstaMed
IQPC
IXI Corp.
JCPenney
JPMorganChase
Jware Technologies
Lowe's
Macy's
MasterCard

Mediterranean Smart Cards Co.
Moneris
NACHA
Navy Federal Credit Union
Neohapsis
Netgiro Systems
Nexxo Financial Corp
Nordstrom
Obopay
Office Depot
OfficeMax
Paybox
Paymerica
PIC Solutions
PNC Bank
Precidia Technologies
PricewaterhouseCoopers
RBS Citizens
Rechargeplus
Retail Data Systems
San Diego County Credit Union
Sears
Selling Source
Serverside Group
Shell
Six Card Solutions
SMi
Southeast Acquirers
Spartanics
Sprint
Staples
State Farm Bank
Sunoco
SunTrust
Swiss Bankers Prepaid Services
Sybase
T-Mobile
Target
TD Retail Card Services
Teraco
Terrapinn
TIB-The Indep. BankersBank
TIO Networks
Town North Bank
Tripoint Communications
U.S. Bank
USAA Federal
VeriFone
Verizon
Visa
Wachovia
Wells Fargo
Western Union
Yapstone