A card for use in a method of performing a financial transaction via unsecured public telecommunication infrastructure

摘要

Abstract A CARD FOR USE IN A METHOD OF PERFORMING A FINANCIAL TRANSACTION VIA UNSECURED PUBLIC TELECOMMUNICATION 5 INFRASTRUCTURE A method of performing a financial transaction via unsecured public telecommunication infrastructure comprising collecting data relating to a specified financial transaction type; building a transaction token including collected data and/or data derived from the collected data; encrypting the 10 transaction token; creating a financial transaction protocol message incorporating the encrypted transaction token as dependent on a selected transport channel through which the message is to be conveyed; and conveying the financial transaction protocol message using the selected transport channel and by way of the unsecured public telecommunication infrastructure to a 15 destination where the financial transaction protocol message will be further processed is disclosed. There is also disclosed a card for use in the method which allows the device to provide both SIM and PSAM functionality to a user of the device. 16 -Memory Payment s -F application Daa Transaction -1 Data Lo [ - Files -20 Figure 2