A Caltech Library Service

Anonymous credit card transactions

Low, Steven Hwye and Maxemchuk, Nicholas Frank and Paul, Sanjoy (2000) Anonymous credit card transactions. Patent number: EP0662673B1.

[img] PDF (European patent no. EP0662673B1) - Published Version
See Usage Policy.

[img] PDF (US patent application no. US5420926A) - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Techniques for performing credit-card transactions without disclosing the subject matter of the transaction to the institution providing the credit card. The techniques include the use of a communications exchange so that information and funds may be transferred without the destination for the transfer knowing the source of the information or funds and the use of public key encryption so that each party to the transaction and the communications exchange can read only the information the party or the exchange needs for its role in the transaction. Also disclosed are techniques for authenticating a card holder by receiving personal information from the card holder, using the information to ask the card holder one or more questions, and using the answers to authenticate the card holder.

Item Type:Patent
Related Patents:US5420926A, CA2134133C, DE69423454T2
Patent Classification:G06Q20/02 Payment architectures, schemes or protocols involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]. Current U.S. Class: 705/74; 705/77; 713/180; 713/183. Current CPC Class: G06Q 20/02 (20130101); G06Q 20/04 (20130101); G06Q 20/085 (20130101); G06Q 20/383 (20130101); G07F 7/1016 (20130101). Current International Class: G06Q 20/00 (20060101); G07F 7/10 (20060101); H04K 001/00 ().
Patent Assignee:AT&T Corp
Related URLs:
URLURL TypeDescription Patents site Patent Office
Low, Steven Hwye0000-0001-6476-3048
Additional Information:Publication number EP0662673B1. Publication type EP Grant. Publication date March 15, 2000. Application number EP0662673A2 (Application); EP0662673A3 (Application); US5420926A. Filing date December 14, 1994. Priority date January 5, 1994.
Record Number:CaltechAUTHORS:20170810-135046300
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80226
Deposited By: Linqi Guo
Deposited On:21 Sep 2017 21:56
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page