- ACS Government Solutions
- Adam Atlas Attorney at Law
- Alliance Data Systems
- Alon USA
- American Banker
- American Express
- Bank of America Merchant Services
- BankFirst
- Bell Canada
- Best Vendors Management
- BFS Finance
- Booz Allen Hamilton
- Brand Keys, Inc.
- Canteen
- Carlson Marketing Group
- Casablanca Ventures
- CBSI
- Chase Paymentech Canada
- CheckFree Corporation
- Cibernet
- ClickAndBuy LLC
- Coinamatic Canada Inc.
- Coinstar Entertainment
- Coinstar, Inc.
- Columbia University
- Compass Bank
- Continental Advisors LLC
- Cubic Transportation Systems, Inc.
- Debitek
- DHL Express
- Digital Transactions
- Direct Technology Innovations
- Discover Financial Services
- Dunkin' Brands, Inc.
- E4X, Inc.
- Epoch Systems
- Epsilon
- ERG Transit Systems
- Ethiopian Commercial Bank
- Federal Reserve Bank of Boston
- Federal Reserve Bank of New York
- Federal Reserve Bank of Philadelphia
- Federal Reserve Bank of San Francisco
- Federal Reserve Board
- Federal Reserve Cash Product Office
- Fifth Third Bank
- First Analysis Corp.
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- First Annapolis Consulting, Inc.
- First Data Corp.
- First Data/STAR Network
- Fiserv
- Fiserv EFT
- FSV Payment Systems
- FTVentures
- Garden Fresh Restaurant Corporation
- GE Consumer Finance
- GE Money
- Global Insurances S.C
- Goldman Sachs
- Golub Corp/Price Chopper Supermarkets
- Green Sheet
- Greenhill & Co.
- Greenhill Capital Partners, LLC
- Hayman Consulting Group
- Heartland Payment Systems
- Industry Consultant
- InSearch Worldside Corp.
- Internet Capital Group
- Jack Henry and Associates
- Jamex, Inc.
- JAVIEN Digital Payment Solutions, Inc.
- JC Simonetti & Associates, Inc
- JCB International Credit Card Co
- JP Morgan Chase
- JPMorgan Chase
- Kabira
- KeyBank
- Lehigh Direct
- Lizzy's Ice Cream
- Loeb Enterprises, LLC
- Massachusetts Bay Transportation Authority
- MasterCard Canada
- MasterCard Worldwide
- MEI
- Mercator Advisory Group, Inc.
- Merit Entertainment
- Microsoft
- New England Bankcard Association
- North Bridge Venture Partners
- NYC Transit
- NYCE Corp.
- Oak Management Corporation
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- Optimal Payments
- OTI America
- Parkeon
- Parking Authority of Baltimore City
- Parsons
- Pay By Touch Payment Solutions
- PayByCash.com
- Payzy Corporation
- Peppercoin
- Peppers & Rogers Group
- Pequot Ventures
- PNC Bank
- Prepaid Media
- Protel, Inc.
- QUALCOMM
- RBS Greenwich Capital
- RBS Lynk
- Redbox
- Robert W. Baird
- RRE Ventures
- S. Vail Ltd.
- Sapphire Mobile Systems, Inc.
- Schwartz Communications, Inc.
- Sirit Inc.
- Smart Systems
- SourceMedia
- Stored Value Systems
- Texas Instruments
- The Port Authority of NY & NJ
- Toscanini's
- Total Technology Ventures
- TSYS Acquiring Solutions
- TSYS Prepaid, Inc.
- USA Technologies, Inc.
- Utah Transit Authority
- Vending Times Magazine
- VerdiCash, Inc.
- VeriFone, Inc.
- Vindicia
- Visa
- Vision Payments Solutions
- ViVOtech
- Wall Street Technology Partners
- Washington Metropolitan Area Transit Authority
- Wawa
- Weight Watchers
- Wells Fargo
- Welsh, Carson, Anderson & Stowe
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