Patents by Inventor William Chi Yuen Chan

William Chi Yuen Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10043177
    Abstract: Methods, devices, and systems are described for sending and receiving messages between a terminal reader and a payment device, such as a credit card. A dynamic signature is calculated on the payment device from an application transaction counter, a terminal unpredictable number, and a transaction amount, and it is sent with an application the locator (AFL) to the reader. The reader then sends a read record command to the payment device to get records associated with the AFL, among other normal processing. While the normal processing is occurring for the transaction, the dynamic signature can be recalculated and compared with that from the payment device in order to assure that nothing has surreptitiously changed the values in the messages.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 7, 2018
    Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Publication number: 20170161723
    Abstract: Methods, devices, and systems are described for sending and receiving messages between a terminal reader and a payment device, such as a credit card. A dynamic signature is calculated on the payment device from an application transaction counter, a terminal unpredictable number, and a transaction amount, and it is sent with an application the locator (AFL) to the reader. The reader then sends a read record command to the payment device to get records associated with the AFL, among other normal processing. While the, normal processing is occurring for the transaction, the dynamic signature can be recalculated and compared with that from the payment device in order to assure that nothing has surreptitiously changed the values in the messages.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 8, 2017
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Patent number: 9613354
    Abstract: Methods, devices, and systems are described for sending and receiving messages between a terminal reader and a payment device, such as a credit card. A dynamic signature is calculated on the payment device from an application transaction counter, a terminal unpredictable number, and a transaction amount, and it is sent with an application file locator (AFL) to the reader. The reader then sends a read record command to the payment device to get records associated with the AFL, among other normal processing. While the normal processing is occurring for the transaction, the dynamic signature can be recalculated and compared with that from the payment device in order to assure that nothing has surreptitiously changed the values in the messages.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: April 4, 2017
    Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Publication number: 20160260092
    Abstract: Methods, devices, and systems are described for sending and receiving messages between a terminal reader and a payment device, such as a credit card. A dynamic signature is calculated on the payment device from an application transaction counter, a terminal unpredictable number, and a transaction amount, and it is sent with an application file locator (AFL) to the reader. The reader then sends a read record command to the payment device to get records associated with the AFL, among other normal processing. While the normal processing is occurring for the transaction, the dynamic signature can be recalculated and compared with that from the payment device in order to assure that nothing has surreptitiously changed the values in the messages.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 8, 2016
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Patent number: 9330386
    Abstract: A method comprising, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for a contactless transaction, receiving information associated with the card, terminating communication with the card, and authorizing the contactless transaction.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: May 3, 2016
    Assignee: Visa International Service Association
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Patent number: 9324069
    Abstract: An apparatus and method for enabling effective use of a contactless payment device in a transit system. The invention may be implemented in a manner that separates the authentication process from the pre-authorization process, thereby permitting a transit system patron to access and begin use of the transit system prior to authorization of the transaction by the issuer of the device.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: April 26, 2016
    Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
    Inventors: William Chi Yuen Chan, Kong Boon Ng
  • Publication number: 20150088737
    Abstract: Various embodiments provide a method for electrically personalizing a payment chip, the method comprising a. storing software onto the payment chip, the software comprising one or more parameters, the one or more parameters being configurable to define functions of the payment chip; and b. setting at least one parameter to a default value to configure at least one function of the payment chip to electrically personalize the payment chip, wherein step a. is performed by at least one entity and step b. is performed by the same at least one entity.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Inventor: William Chi Yuen Chan
  • Publication number: 20150073883
    Abstract: A system, apparatus, and method for enabling effective use of a contactless payment device in a transit system. The invention may be implemented in a manner that separates the authentication process from the pre-authorization process, thereby permitting a transit system patron to access and begin use of the transit system prior to authorization of the transaction by the issuer of the device.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventors: William Chi Yuen Chan, Kong Boon Ng
  • Patent number: 8915431
    Abstract: A system, apparatus, and method for enabling effective use of a contactless payment device in a transit system. The invention may be implemented in a manner that separates the authentication process from the pre-authorization process, thereby permitting a transit system patron to access and begin use of the transit system prior to authorization of the transaction by the issuer of the device.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: December 23, 2014
    Assignee: Visa International Service Association
    Inventors: William Chi Yuen Chan, Kong Boon Ng
  • Publication number: 20140246492
    Abstract: A method comprising, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for a contactless transaction, receiving information associated with the card, terminating communication with the card, and authorizing the contactless transaction.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 4, 2014
    Applicant: Visa International Service Association
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Patent number: 8770476
    Abstract: A method. The method comprises, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for the contactless transaction, receiving information associated with the card, and terminating communication with the card to authorizing the contactless transaction.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: July 8, 2014
    Assignee: Visa International Service Association
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim R. Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Publication number: 20130138561
    Abstract: Methods and systems for provisioning data to a mobile device operable as a contactless payment device, the data including currency location data; receiving a notification that the mobile device is operating in a second currency location; and sending updated currency location data to the mobile device based on the second currency location. Some methods and systems include receiving, at a mobile device operable as a contactless payment device, currency location data associated with a first currency location; receiving updated currency location data associated with a second currency location by the mobile device located at the second currency location; and updating values for currency location data parameters of the mobile device based on the updated currency location data.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventor: William Chi Yuen Chan
  • Publication number: 20110000962
    Abstract: A system, apparatus, and method for enabling effective use of a contactless payment device in a transit system. The invention may be implemented in a manner that separates the authentication process from the pre-authorization process, thereby permitting a transit system patron to access and begin use of the transit system prior to authorization of the transaction by the issuer of the device.
    Type: Application
    Filed: June 17, 2010
    Publication date: January 6, 2011
    Inventors: William Chi Yuen Chan, Kong Boon Ng
  • Publication number: 20100270374
    Abstract: A method. The method comprises, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for the contactless transaction, receiving information associated with the card, and terminating communication with the card to authorizing the contactless transaction.
    Type: Application
    Filed: July 6, 2010
    Publication date: October 28, 2010
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Christian Aabye, Kim Wagner, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning
  • Patent number: 7798394
    Abstract: A method. The method comprises, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for the contactless transaction, receiving information associated with the card, and terminating communication with the card to authorizing the contactless transaction.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: September 21, 2010
    Assignee: Visa International Service Association
    Inventors: Trudy Hill, Jagdeep Singh Sahota, Kim Wagner, Christian Aabye, Anita Ochieano, Carole Oppenlander, William Chi Yuen Chan, Craig Allen Glendenning