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Institution

Visa Inc.

CompanyLondon, United Kingdom
About: Visa Inc. is a company organization based out in London, United Kingdom. It is known for research contribution in the topics: Database transaction & Transaction data. The organization has 1031 authors who have published 1076 publications receiving 36053 citations. The organization is also known as: Visa & Visa Inc.


Papers
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Patent
28 Jun 1996
TL;DR: In this article, a real-time point of transaction funds confirmation system is provided whereby a draft is presented by a payor to a payee and a bank identifier and an account identifier are electronically read off the draft and used as part of a funds confirmation request.
Abstract: A real-time point of transaction funds confirmation system is provided whereby a draft is presented by a payor to a payee and a bank identifier and an account identifier are electronically read off the draft and used as part of a funds confirmation request. The funds confirmation request is submitted to a network where a plurality of payees and a plurality of payor banks are connected. The payor bank identified on the draft verifies the account identifier and compares the amount of the transaction to an amount of funds available in the account corresponding to the account identifier. The payor bank processor then returns a response message indicating whether or not sufficient funds were available. If the request is a funds guarantee request, then the payor bank will generally place a halt on funds sufficient to cover the draft. Otherwise, if the request is merely a funds verification request, the payor bank may choose not to place a hold on the funds.

258 citations

Patent
Ann-Pin Chen1
22 Sep 1999
TL;DR: In this paper, a loyalty file structure for a smart card is described, which includes any number of loyalty files preinstalled by a card manufacturer and can be used to store information pertaining to a purchased ticket.
Abstract: A loyalty file structure for a smart card (104) includes any number of loyalty files (106-112) preinstalled by a card manufacturer. Each loyalty file (300) has a password (302), a file number (304), a label (306), an indicator of whether or not the file is currently being rented by a merchant (308), a length indicator (310), a data format indicator (312), and a data region (314). An issuer (102) creates a unique password for each loyalty file on a card and then issues cards to customers (514). For customer enrollment at a point-of-sale, a merchant determines if a loyalty file is available (FIG. 8A). The merchant password is sent to the issuer on-line in real time (FIG. 8B) and is returned along with authorization from the issuer to replace the password of the loyalty file with the merchant password (FIG. 8C). The file label (306) is changed to a merchant identifier and the file (300) is indicated as being rented. The merchant sends payment or a credit transaction to the issuer (102) for use of the loyalty file (300). For use with a loyalty program, a merchant terminal (202) finds the loyalty file (300) of a customer's card (104) for that merchant and reads or updates information within that file. The loyalty file on a card (926) is also used with electronic ticketing to store information pertaining to a purchased ticket. Upon later presentation of the card (926) at an airline boarding gate (930), stored information in the loyalty file is compared with the same information downloaded from the airline host computer (910). A match indicates a valid purchase and a boarding pass is issued.

254 citations

Patent
Carl A. Adams1
25 Oct 1991
TL;DR: In this paper, a transaction approval system (10) is disclosed which includes various enhancements to existing systems, such as dynamic adjustment of the transaction limit (30) stored in the terminal to vary the level of risk at the terminal.
Abstract: A transaction approval system (10) is disclosed which includes various enhancements to existing systems. For example, the transaction limit (30) stored in the terminal can by dynamically adjusted to vary the level of risk at the terminal to be closer to the desired level of risk. The terminal will also generate and store a list of account numbers (44,46) which might be invalid and should provode an on-line request for authorization.

253 citations

Patent
22 Jul 2011
TL;DR: In this paper, a data warehouse is configured to store transaction data of accounts issued by a plurality of issuers, and at least one processor is configurable to calculate values of a first plurality of variables for each of the accounts.
Abstract: Systems and methods are provided to generate tools to evaluate the probability of an account being actually used by a business rather than an individual. In one aspect, a computing apparatus includes: a data warehouse configured to store transaction data of accounts issued by a plurality of issuers; and at least one processor configured to calculate values of a first plurality of variables for each of the accounts using the transaction data of the accounts issued by the plurality of issuers. The accounts include business accounts and non-business accounts. The at least one processor is further configured to identify a second plurality of variables from the first plurality of variables for a classification model to distinguish, using the values and logistic regression, the business accounts from the non-business accounts.

231 citations

Patent
18 Dec 1998
TL;DR: Secure activation of stored value cards (30) at a point of distribution uses a portable activation secure application module (ASAM) within the card dispensing machine (24) to activate each card as discussed by the authors.
Abstract: Secure activation of stored value cards (30) at a point of distribution uses a portable activation secure application module (ASAM) (208) within the card dispensing machine (24) to activate each card. Each card has a standard user mode and a security user mode. In the standard user mode the card is activated and ready for use. In the security user mode the card is not active and cannot be used to make a purchase. An issuer (20) supplies an issuer activation key (40) to a card supplier (22) who produces a security code (72) which is stored on a stored value card (30). Cards are supplied to the issuer (20) in security user mode, and stored in a dispensing machine (24). The issuer activation key (40) is also relayed to the dispensing machine and stored on the ASAM (208). Upon purchase by a customer (26), the issuer activation key (40) is used within the machine (24) by the ASAM (208) to reproduce the security code (72) and to activate a card. An activation control counter (ACC) is stored within the ASAM and is decremented for every attempt at activation of a card. ASAMs are maintained in the field using a dial-up connection to a central computer (202) with a control secure application module (CSAM) (206), or using a field secure application module (FSAM) (502) that is created at a central location using the CSAM (206). Each FSAM is able to update a limited number of ASAMs. A hierarchy of keys (600) is used by the CSAM, the FSAMs and ASAMs to ensure security.

230 citations


Authors

Showing all 1032 results

NameH-indexPapersCitations
Ayman Hammad431156489
Mark Carlson421145417
Patrick Faith391015800
Selim Aissi31872974
Lisa J. Anderson31726418
Payman Mohassel281053784
Kevin P. Siegel28393496
Patrick Stan25421915
Gyan Prakash251332053
Konstantinos Markantonakis242082697
Glenn Powell23311834
Leigh Amaro23232331
John F. Sheets21411968
Edward W. Fordyce20232222
Krishna Prasad Koganti19231284
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20221
202137
2020138
2019118
201869
201761