Patent ID: 7853533

Claim:
A method for identifying a client computer using a website server comprising the steps of: providing a time capture script from the website server for execution by the client computer; executing the time capture script to instruct a browser of the client computer to obtain selected information about the client computer during an online connection including a local time according to a client computer clock and at least one non-personal identification parameter; returning the local time of the client computer clock and the non-personal identification parameter to the website server in accordance with the time capture script; obtaining a local server time from a website server clock; calculating, at the website server, a delta of time parameter based upon a difference in time between the local server time and the local time of the client computer clock received from the client computer; generating a computer identifier which incorporates the non-personal identification parameter related to the client computer and the delta of time parameter; comparing the computer identifier with another selected computer identifier; calculating a matching parameter based on said comparing, wherein said matching parameter is a raw number, score, or increment of measurement based on the difference between the computer identifiers; determining whether the matching parameter falls within a selected range; and based on the determination that the matching parameter falls within the selected range indicating, by some device or application, a positive match for linking one of the computer identifiers to one or more fraudulent transactions.