Patents by Inventor Hwai Sian Tsai

Hwai Sian Tsai 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).

  • Publication number: 20250104084
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20250037136
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 12210596
    Abstract: Methods and systems for installing and running an application for a terminal are described. The method may include uploading an application to an application store. The method may also include downloading, by a terminal, the application from the application store, wherein the terminal is connected to the application store by a network. Furthermore, the method may include authorizing, by a terminal management server (TMS) coupled to the terminal and the application store via the network, the terminal to install and run the downloaded application.
    Type: Grant
    Filed: September 29, 2023
    Date of Patent: January 28, 2025
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 12169841
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: December 17, 2024
    Assignee: Stripe, Inc.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 12125041
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Grant
    Filed: May 4, 2023
    Date of Patent: October 22, 2024
    Assignee: Stripe, Inc.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20240346500
    Abstract: A system for accepting the input of a PIN comprises a first device receiving a randomized PIN layout derived on a fourth device. The randomized PIN layout is displayed on a display of the first device. A second device comprises an input for accepting a series of key presses to produce a PIN token. The PIN token indicating each of the series of key presses. A third device is in communication with the second device. The third device derives the randomized PIN layout and receives the PIN token from the second device without the PIN token being present on the first device. The third device combines the PIN layout and the PIN token to produce a PIN. The PIN is used to authenticate a transaction. The fourth and third devices each store a shared secret used to independently derive the randomized PIN layout on the fourth and third devices.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 17, 2024
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Publication number: 20240338698
    Abstract: A system for conducting a card transaction comprises an consumer application running on a user device, a card reading interface separate from the user device, a payment application residing on a COTS device, a PIN verification subsystem, an EPB creation subsystem located at an EPB creation location, and a server. The user device receives an entered PIN. The card reading interface receives a PAN from a payment card. Either the PIN or a first set of signals comprising the PIN is received by the EPB creation subsystem. The second set of signals comprising the PAN is generated and transmitted by the payment application via the network. An EPB is created by the EPB creation subsystem based on the PIN and PAN, and the EPB is transmitted by the EPB creation subsystem to either the PIN verification subsystem or the payment card for PIN verification.
    Type: Application
    Filed: July 15, 2022
    Publication date: October 10, 2024
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20240330897
    Abstract: A system to indicate to a user to enter a personal identification number (PIN) on a commercial off the shelf (COTS) device, the system comprising: a secure card reader communicatively coupled to the COTS device, and wherein the secure card reader receives a payment card; a payment application installed on the COTS device; and one or more devices other than the COTS device. The payment application installed on the COTS device transmits one or more prompts to the one or more devices other than the COTS device based on a set of signals received from the secure card reader. The secure card reader transmits the set of signals after the payment card is received at the secure card reader, and the one or more prompts comprise at least one indication to the user to enter the PIN on a display of the COTS device.
    Type: Application
    Filed: June 6, 2024
    Publication date: October 3, 2024
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 12056701
    Abstract: A system for accepting the input of a PIN comprises a first device receiving a randomized PIN layout derived on a fourth device. The randomized PIN layout is displayed on a display of the first device. A second device comprises an input for accepting a series of key presses to produce a PIN token. The PIN token indicating each of the series of key presses. A third device is in communication with the second device. The third device derives the randomized PIN layout and receives the PIN token from the second device without the PIN token being present on the first device. The third device combines the PIN layout and the PIN token to produce a PIN. The PIN is used to authenticate a transaction. The fourth and third devices each store a shared secret used to independently derive the randomized PIN layout on the fourth and third devices.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: August 6, 2024
    Assignee: Stripe, Inc.
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Patent number: 12039519
    Abstract: A system to indicate to a user to enter a personal identification number (PIN) on a commercial off the shelf (COTS) device, the system comprising: a secure card reader communicatively coupled to the COTS device, and wherein the secure card reader receives a payment card; a payment application installed on the COTS device; and one or more devices other than the COTS device. The payment application installed on the COTS device transmits one or more prompts to the one or more devices other than the COTS device based on a set of signals received from the secure card reader. The secure card reader transmits the set of signals after the payment card is received at the secure card reader, and the one or more prompts comprise at least one indication to the user to enter the PIN on a display of the COTS device.
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: July 16, 2024
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 12008428
    Abstract: A reader device for attachment to a smart device comprising a display, the reader comprising an antenna, processing and reading circuitry, and a communications module, wherein the antenna, the processing and reading circuitry, the processor and the communications module are coupled to each other, and whereby the antenna encloses said display. When a card is tapped on the display, the antenna receives a signal and transmits the signal to the processing and reading circuitry. The processing and reading circuitry processes the signal to produce data, and the produced data is transmitted to a device external to the reader device by the communications module.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: June 11, 2024
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20240028672
    Abstract: Methods and systems for installing and running an application for a terminal are described. The method may include uploading an application to an application store. The method may also include downloading, by a terminal, the application from the application store, wherein the terminal is connected to the application store by a network. Furthermore, the method may include authorizing, by a terminal management server (TMS) coupled to the terminal and the application store via the network, the terminal to install and run the downloaded application.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11809528
    Abstract: Installing and running an application for a terminal are described. A method for installing and running the application includes uploading an application to an application store. The method further includes downloading, by a terminal, the application from the application store, wherein the terminal is connected to the application store by a network. Furthermore, the method includes authorizing, by a terminal management server (TMS) coupled to the terminal and the application store via the network, the terminal to install and run the downloaded application.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 7, 2023
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20230351385
    Abstract: A system for accepting the input of a PIN comprises a first device receiving a randomized PIN layout derived on a fourth device. The randomized PIN layout is displayed on a display of the first device. A second device comprises an input for accepting a series of key presses to produce a PIN token. The PIN token indicating each of the series of key presses. A third device is in communication with the second device. The third device derives the randomized PIN layout and receives the PIN token from the second device without the PIN token being present on the first device. The third device combines the PIN layout and the PIN token to produce a PIN. The PIN is used to authenticate a transaction. The fourth and third devices each store a shared secret used to independently derive the randomized PIN layout on the fourth and third devices.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 2, 2023
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Patent number: 11804711
    Abstract: A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: October 31, 2023
    Assignee: STRIPE, INC.
    Inventors: Wing Cheong Chan, Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20230297789
    Abstract: A reader device for attachment to a smart device comprising a display, the reader comprising an antenna, processing and reading circuitry, and a communications module, wherein the antenna, the processing and reading circuitry, the processor and the communications module are coupled to each other, and whereby the antenna encloses said display. When a card is tapped on the display, the antenna receives a signal and transmits the signal to the processing and reading circuitry. The processing and reading circuitry processes the signal to produce data, and the produced data is transmitted to a device external to the reader device by the communications module.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Inventors: Hwai Sian TSAI, Chi Wah LO
  • Patent number: 11756033
    Abstract: A system for accepting the input of a PIN comprises a first device receiving a randomized PIN layout derived on a fourth device. The randomized PIN layout is displayed on a display of the first device. A second device comprises an input for accepting a series of key presses to produce a PIN token. The PIN token indicating each of the series of key presses. A third device is in communication with the second device. The third device derives the randomized PIN layout and receives the PIN token from the second device without the PIN token being present on the first device. The third device combines the PIN layout and the PIN token to produce a PIN. The PIN is used to authenticate a transaction. The fourth and third devices each store a shared secret used to independently derive the randomized PIN layout on the fourth and third devices.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: September 12, 2023
    Assignee: STRIPE, INC.
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Publication number: 20230281600
    Abstract: A system to indicate to a user to enter a personal identification number (PIN) on a commercial off the shelf (COTS) device, the system comprising: a secure card reader communicatively coupled to the COTS device, and wherein the secure card reader receives a payment card; a payment application installed on the COTS device; and one or more devices other than the COTS device. The payment application installed on the COTS device transmits one or more prompts to the one or more devices other than the COTS device based on a set of signals received from the secure card reader. The secure card reader transmits the set of signals after the payment card is received at the secure card reader, and the one or more prompts comprise at least one indication to the user to enter the PIN on a display of the COTS device.
    Type: Application
    Filed: May 15, 2023
    Publication date: September 7, 2023
    Inventors: Hwai Sian TSAI, Chi Wan LO
  • Publication number: 20230274284
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: RE49888
    Abstract: A magnetic reader head assembly includes a magnetic reader head compartment, a frame and an elastic component. The magnetic reader head compartment comprises electronic and mechanical components of the magnetic reader head. The frame has a front side and a back side and has a footprint matching the footprint of the magnetic reader head compartment. The front side is configured to attach to a back wall of the magnetic reader head compartment while allowing the magnetic reader head compartment to move out or retract from the frame. The elastic component is configured to be placed at the back side of the frame and to push the frame out in order to press the magnetic reader head compartment against a magnetic card stripe.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: March 26, 2024
    Assignee: STRIPE, INC.
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Kin Wai Chan