US Patent 8229848 Secure networked transaction system

A method and system for approving a transaction between a customer and a merchant including the steps of transmitting a transaction request from a customer to a merchant; transmitting a verification request from the merchant to a verification entity, the verification request comprising first data; the customer device transmitting second data to the verification entity; and the verification entity performing a verification step by using the first data and the second data to verify if the transaction should be approved.