Patent ID: 8001376

Claim:
A method for storing data for identification comprising: in response to a client machine establishing a connection with a backend machine, receiving unique identifying data at the client machine from the backend machine; reversibly scrambling the unique identifying data to produce a first scrambled version of the unique identifying data and a second version of the unique identifying data; storing the first scrambled version of the unique identifying data at a first predetermined location of the client machine and the second scrambled version of the unique identifying data at a second predetermined location of the client machine, different from the first predetermined location; retrieving the first and second stored scrambled versions of the unique identifying data; unscrambling the first and second stored scrambled versions to produce a first unscrambled version and a second unscrambled version of the unique identifying data; comparing the first unscrambled version and second unscrambled version; and sending data representative of the comparison to the backend machine.