Patent ID: 8239683

Claim:
A method for generating confirmed transaction data by means of a personal computer having a monitor which is driven by a display preparation unit which from the CPU of the personal computer receives graphics data from which it generates pixel graphics, comprising the steps: providing a converter unit on the display preparation unit which is arranged to convert data to be interpreted into pixel values, providing a real-data memory on the display preparation unit for storing transaction data to be interpreted, providing a crypto unit on the display preparation unit for generating a signature for a record of the transaction data to be interpreted, providing a user input unit in order to pass user inputs to the crypto unit, providing an interface on the display preparation unit for the user input unit to pass user inputs directly to the crypto unit, starting an application in which transaction data are processed, pre-processing the transaction data as data to be interpreted on the personal computer under control of an application software, supplying the transaction data to be interpreted to the converter unit, depositing the transaction data to be interpreted in the real-data memory, converting the transaction data to be interpreted into pixel values by the converter unit, displaying the pixel values on the monitor, establishing a connection between the user input unit and the crypto unit through the interface on the display preparation unit which allows the input of a confirmation signal only by a user, inputting a confirmation signal by a user via the user input unit, generating a signature over the transaction data stored in the real-data memory after the input of a confirmation signal by a user, joining the signature and the transaction data into confirmed transaction data.