The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 1983
Filed:
Nov. 10, 1980
Applicant:
Inventor:
Carl M Campbell, Newtown Square, PA (US);
Assignee:
MasterCard International, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ; H04L / ; G06F / ; G06K / ;
U.S. Cl.
CPC ...
34082534 ; 235379 ; 235382 ; 178 2208 ;
Abstract
A security system, particularly useful in an electronic funds transfer system, makes use of secret identification codes known only to system users. The codes are encrypted upon insertion into the system and are stored in a data processing unit in encrypted form. A security module is used to decrypt the code entered by a user and compare it to the corresponding encrypted code stored in the data processing unit.