System and method for authorizing access to an article distribution or service acquisition machine
September 15, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3631403 Point-of-sale system and apparatus Universal funds transfer and identification card Credit card containing electronic circuit Anti-theft cash register Systems for storing and transferring data System for limiting access to security system program Identification system safeguarded against misuse Transaction terminal Versatile automatic transaction equipment InventorsAssigneeApplicationNo. 06/302621 filed on 09/15/1981US Classes:705/41, Having programming of a portable memory device (e.g., IC card, "electronic purse")235/380, Credit or identification card systems235/381, With vending235/382, Permitting access705/18, Having security or user identification provision (password entry, etc.)705/44, Requiring authorization or authentication705/67Including authenticationExaminersPrimary: Smith, JerryAssistant: Watson, Mark P. Attorney, Agent or FirmInternational ClassesG07F 7/12 (20060101)G07F 7/10 (20060101) Foreign Application Priority Data1980-09-16 FRAbstractA system and method for distribution of articles or services, especially adapted to be secure against use by unauthorized personel, receives first and second data carriers. Each data carrier includes a processor, data storage, and interfacing circuits. A random number generator feeds a random number to each of the data carriers which use a program to generate a resultant based on the random number, a secret code and an identification number. The secret code and identification number are stored in the data storage of each data carrier. The resultants are compared to determine if they are equal, in which case access is allowed.Other References
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