1
Peter D Saunders, Brian T Barnes: System and method for secure transactions manageable by a transaction account provider. American Express Travel Related Services Company, Snell & Wilmer L, June 9, 2009: US07543738 (46 worldwide citation)

A system and method for securing a financial transaction using a proxy code, which is assigned a transaction account number. An account issuer permanently assigns the proxy code to a transaction account correlated to the transaction device. The proxy code is uploaded onto the transaction device for ...


2
Peter D Saunders, Brian T Barnes: System and method for secure transactions manageable by a transaction account provider. American Express Travel Related Services Company, Snell & Wilmer L, April 16, 2013: US08418918 (2 worldwide citation)

A system and method for securing a financial transaction using a proxy code, which is assigned a transaction account number. An account issuer permanently assigns the proxy code to a transaction account correlated to the transaction device. The proxy code is uploaded onto the transaction device for ...


3
Peter D Saunders, Brian T Barnes: System and Method for Secure Transactions Manageable by a Transaction Account Provider. American Express Travel Related Services Company, Snell & Wilmer, May 14, 2009: US20090125446-A1

A system and method for securing a financial transaction using a proxy code, which is assigned a transaction account number. An account issuer permanently assigns the proxy code to a transaction account correlated to the transaction device. The proxy code is uploaded onto the transaction device for ...