Patents by Inventor Afshin Rezayee

Afshin Rezayee 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: 20250113394
    Abstract: In one aspect, a system includes a wireless communication device; and an interactive electronic device. The wireless communication device includes a wireless communication circuitry; a memory; and a first processor configured to access identifiers associated with the wireless communication device and transmit a message including the identifiers via the wireless communication circuitry.
    Type: Application
    Filed: December 13, 2024
    Publication date: April 3, 2025
    Inventors: Afshin Rezayee, Malcolm Smith, Sergei Mosends, Michael Wells White, Ovidiu Bota, Max Guise, Andrew John Leiserson
  • Publication number: 20250069059
    Abstract: An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The PUF source includes a plurality of fuses that provide PUF data based on a measurement of electrical parameters resulting from a first signal being transmitted through the plurality of fuses. The electronic device also has processing circuitry in communication with the PUF source that can detect a triggering event at the electronic device and determine an event type based on the detected triggering event. The processing circuitry can select at least one fuse of the plurality of fuses based on the determined event type and change an electrical property of the selected at least one fuse such that the PUF data from the PUF source is modified.
    Type: Application
    Filed: September 20, 2024
    Publication date: February 27, 2025
    Applicant: Block, Inc.
    Inventors: Kamran Sharifi, Jeremy Wade, Bertram Leesti, Afshin Rezayee, Yue Yang, Max Joseph Guise
  • Patent number: 12223507
    Abstract: A transaction device can implement a monitoring system to detect for tamper attempts at a chip card interface. The monitoring system can establish a baseline when no chip card is present in the chip card interface, or in some embodiments, when it is known that an authentic chip card is present in the slot. During subsequent evaluations of the chip card interface by the monitoring system, a response received by the monitoring system that deviates from the baseline can indicate that a tamper attempt at the chip card interface may have occurred. If a tamper attempt is determined by the monitoring system, a remedial or corrective action can be taken.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: February 11, 2025
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Malcolm Smith, Yue Yang, Jeremy Wade, Max Guise, Kamran Sharifi
  • Patent number: 12207322
    Abstract: A wireless communication device such as a payment reader has a wireless communication interface and is able to establish wireless pairing with an interactive electronic device such as a merchant device running a point of sale application. In order to establish pairing, the wireless communication device accesses an identifier. The identifier is transmitted to the interactive electronic device via the wireless communication interface, and the interactive electronic device sends the identifier to a pairing server. The pairing server retrieves a passkey based on the identifier and sends the retrieved passkey to the interactive electronic device via a secure connection. The wireless communication device and the interactive electronic device establish wireless pairing based on the retrieved passkey.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 21, 2025
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Malcolm Smith, Sergei Mosends, Michael Wells White, Ovidiu Bota, Max Guise, Andrew John Leiserson
  • Patent number: 12182790
    Abstract: A wearable device, such as a finger ring worn by a user, communicates information about a user to a reader that uses the information in order to perform a transaction. Such wearable device may be conveniently carried by and accessible to the user such that utilization of the device for the transaction is less burdensome for the user, thereby encouraging use of the device for particular transactions. Indeed, in some cases, such as when the device is implemented as a finger ring or other type of jewelry, the user may be encouraged to carry the device in an exposed manner such that it is readily available for the transaction without the user having to search in a wallet, pocket, or purse for the device.
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: December 31, 2024
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Emad Bidari, Thomas Templeton, Michael Lamfalusi, Matthew H. Maibach, Jesse L. Dorogusker
  • Patent number: 12141786
    Abstract: An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include processing circuitry positioned on the printed circuit board. The PUF source includes a plurality of traces and each trace includes a first portion and a second portion having an increased surface area relative to the first portion. The PUF source is responsive to an input from the processing circuitry to provide PUF data based on the impedance characteristics of the plurality of traces. The processing circuitry is further configured to process the PUF data from the PUF source to perform an operation within the device.
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: November 12, 2024
    Assignee: Block, Inc.
    Inventors: Kamran Sharifi, Jeremy Wade, Bertram Leesti, Afshin Rezayee, Yue Yang, Max Joseph Guise
  • Publication number: 20240362617
    Abstract: A system for sensing a location of a near field communication (NFC) device includes an NFC reader that communicates with a remote NFC device through load modulation. The NFC reader transmits a wireless carrier signal from an antenna, and the remote NFC device modulates the carrier signal by changing its internal impedance in order to transmit data to the NFC reader. The NFC reader has at least one antenna for receiving the modulated signal. The antenna is coupled to circuitry that analyzes the signal received from the remote NFC device to determine a location of the remote NFC device relative to the NFC reader. The circuitry then selects a transmit antenna from a plurality of transmit antennas in the NFC reader, based on the determined location, to communicate with the remote NFC device.
    Type: Application
    Filed: July 8, 2024
    Publication date: October 31, 2024
    Applicant: Block Inc.
    Inventors: Haipeng Yan, Emad Bidari, Bertram Leesti, Afshin Rezayee
  • Publication number: 20240296438
    Abstract: A device may execute an application having information about multiple accounts associated with the processing of transactions. The application may provide standard account information that is used to process the transactions. At the same time, a background application may operate on the device. The background application may be compatible with a second device, and when within range of the second device, may communicate background messages relevant to the transaction. The second device may provide an option to a user of the device to process the transaction with a non-standard account via the background application.
    Type: Application
    Filed: May 7, 2024
    Publication date: September 5, 2024
    Applicant: Block Inc.
    Inventors: Afshin Rezayee, Malcolm Smith, Lev Kusman, Gokhan Aydeniz, Yasser Zabuair, Jesse Wilson, Shawn Zurbrigg, Murat Cat
  • Patent number: 12062035
    Abstract: A system for sensing a proximity of a near field communication (NFC) device includes an NFC reader that communicates with a remote NFC device through load modulation. The NFC reader transmits a wireless carrier signal from an antenna, and the remote NFC device modulates the carrier signal by changing its internal impedance in order to transmit data to the NFC reader. The NFC reader has at least one antenna for receiving the modulated signal. The antenna is coupled to circuitry that analyzes the signal received from the remote NFC device The circuitry then identifies a resonant frequency for the remote NFC device based on the received signal and controls transmission characteristics of the NFC reader for communicating with the remote NFC device based on the identified resonant frequency.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: August 13, 2024
    Assignee: Block, Inc.
    Inventors: Haipeng Yan, Emad Bidari, Bertram Leesti, Afshin Rezayee
  • Patent number: 12020235
    Abstract: A device may run an application having information with multiple accounts associated with processing of transactions. The application may provide account information that is used to process the transactions. At the same time, a background application may operate on the device. The background application may be compatible with a second device, and when within range of the second device, may communicate background messages relevant to the transaction. The transaction may then be processed based on the account information and the background messages.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 25, 2024
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Malcolm Smith, Lev Kusman, Gokhan Aydeniz, Yasser Zabuair, Jesse Wilson, Shawn Zurbrigg, Murat Cat
  • Publication number: 20240185227
    Abstract: A provisioning system is provided for terminals such as point of sale terminals. An interface device interfaces with a smart card and a provisioning server, providing initialization keys and security codes that are stored on the smart card. At a terminal, an initialization key from the smart card may be provided to the terminal if a correct security code is entered at the terminal. The terminal may then provide a terminal authorization package to the smart card. The terminal authorization package is stored on the smart card. At the interface device, the terminal authorization package is provided to the provisioning server. The terminal may then securely communicate transactions with an issuer server.
    Type: Application
    Filed: December 12, 2023
    Publication date: June 6, 2024
    Applicant: Block, Inc.
    Inventors: Malcolm Smith, Kshitiz Vadera, Afshin Rezayee
  • Publication number: 20240144260
    Abstract: A payment device such as electronic transaction card or an near field communication device can use a temporary token for payment transactions. When processing a payment transaction, a payment reader can obtain the temporary token from the payment device and provide the temporary token to a server of the issuer of the payment device. The payment reader can receive a new temporary token and an issuer script from the server and provide the new temporary token and the issuer script to the payment device. When the payment device receives the issuer script, the payment device can execute the issuer script, while the payment device is interfaced with the payment reader, to store the new temporary token on the payment device.
    Type: Application
    Filed: January 5, 2024
    Publication date: May 2, 2024
    Applicant: Block, Inc.
    Inventors: Afshin Rezayee, Murat Cat
  • Patent number: 11893581
    Abstract: A payment device such as electronic transaction card or an near field communication device can use a temporary token for payment transactions. When processing a payment transaction, the temporary token is provided to a server of the issuer of the payment device, which can authorize the payment transaction and determine if the temporary token can be used for a subsequent transaction. If the server determines that the temporary token cannot be used for another transaction, the server provides the payment device with a new temporary token and an issuer script. When the payment device receives the issuer script, the payment device can execute the issuer script to store the new temporary token on the payment device.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 6, 2024
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Murat Cat
  • Patent number: 11887022
    Abstract: A provisioning system is provided for terminals such as point of sale terminals. An interface device interfaces with a smart card and a provisioning server, providing initialization keys and security codes that are stored on the smart card. At a terminal, an initialization key from the smart card may be provided to the terminal if a correct security code is entered at the terminal. The terminal may then provide a terminal authorization package to the smart card. The terminal authorization package is stored on the smart card. At the interface device, the terminal authorization package is provided to the provisioning server. The terminal may then securely communicate transactions with an issuer server.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: January 30, 2024
    Assignee: Block, Inc
    Inventors: Malcolm Smith, Kshitiz Vadera, Afshin Rezayee
  • Publication number: 20240015005
    Abstract: A hashing system includes data storage circuit elements that store words to be used for hashing a message. Each data storage circuit element stores a word without moving the word to any other data storage circuit element during hashing. The hashing system includes combinational logic circuit element(s) that select specified data storage circuit elements according to a specified order that simulates shifting of at least a subset of the words among the data storage circuit elements, for instance based on an order in which the words were stored and/or based a clock. The hashing system includes computational operator(s) that generate additional word(s) based on the selected specified words. The hashing system stores the additional word(s) into available data storage circuit element(s), in some cases overwriting prior word(s) that were stored in the available data storage circuit element(s). The hashing system can include a message expander (ME) and/or message compressor (MC).
    Type: Application
    Filed: July 6, 2022
    Publication date: January 11, 2024
    Inventors: William Song, Yue Yang, Bertram Leesti, Mehrdad Ramezani, Afshin Rezayee, Kajornsak Julavittayanukool, Weili Chen
  • Patent number: 11861589
    Abstract: A device may run an application having information with multiple accounts associated with processing of transactions. The application may provide account information that is used to process the transactions. At the same time, a background application may operate on the device. The background application may be compatible with a second device, and when within range of the second device, may communicate background messages relevant to the transaction. The transaction may then be processed based on the account information and the background messages.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: January 2, 2024
    Assignee: Block, Inc.
    Inventors: Afshin Rezayee, Malcolm Smith, Lev Kusman, Gokhan Aydeniz, Yasser Zabuair, Jesse Wilson, Shawn Zurbrigg, Murat Cat
  • Publication number: 20230410086
    Abstract: A system for sensing a proximity of a near field communication (NFC) device includes an NFC reader that communicates with a remote NFC device through load modulation. The NFC reader transmits a wireless carrier signal from an antenna, and the remote NFC device modulates the carrier signal by changing its internal impedance in order to transmit data to the NFC reader. The NFC reader has at least one antenna for receiving the modulated signal. The antenna is coupled to circuitry that analyzes the signal received from the remote NFC device The circuitry then identifies a resonant frequency for the remote NFC device based on the received signal and controls transmission characteristics of the NFC reader for communicating with the remote NFC device based on the identified resonant frequency.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Applicant: Block, Inc.
    Inventors: Haipeng Yan, Emad Bidari, Bertram Leesti, Afshin Rezayee
  • Publication number: 20230401561
    Abstract: An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include processing circuitry positioned on the printed circuit board. The PUF source includes a plurality of traces and each trace includes a first portion and a second portion having an increased surface area relative to the first portion. The PUF source is responsive to an input from the processing circuitry to provide PUF data based on the impedance characteristics of the plurality of traces. The processing circuitry is further configured to process the PUF data from the PUF source to perform an operation within the device.
    Type: Application
    Filed: August 25, 2023
    Publication date: December 14, 2023
    Applicant: Block, Inc.
    Inventors: Kamran Sharifi, Jeremy Wade, Bertram Leesti, Afshin Rezayee, Yue Yang, Max Joseph Guise
  • Publication number: 20230401556
    Abstract: A wearable device, such as a finger ring worn by a user, communicates information about a user to a reader that uses the information in order to perform a transaction. Such wearable device may be conveniently carried by and accessible to the user such that utilization of the device for the transaction is less burdensome for the user, thereby encouraging use of the device for particular transactions. Indeed, in some cases, such as when the device is implemented as a finger ring or other type of jewelry, the user may be encouraged to carry the device in an exposed manner such that it is readily available for the transaction without the user having to search in a wallet, pocket, or purse for the device.
    Type: Application
    Filed: August 25, 2023
    Publication date: December 14, 2023
    Inventors: Afshin Rezayee, Emad Bidari, Thomas Templeton, Michael Lamfalusi, Matthew H. Maibach, Jesse L. Dorogusker
  • Patent number: 11783317
    Abstract: A near field communication (NFC) system includes an NFC reader that communicates with a remote NFC device through load modulation. The NFC reader transmits a wireless carrier signal from an antenna and has a plurality of passive receive antennas to receive the modulated signal. The NFC reader also has circuitry to provide a plurality of data streams that define data recovered from the modulated wireless carrier signal received from the plurality of receivers. The circuitry then selects, based on a location of the NFC device relative to the NFC reader, one of the plurality of data streams for use in processing a transaction.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: October 10, 2023
    Assignee: Block, Inc.
    Inventors: Haipeng Yan, Emad Bidari, Bertram Leesti, Afshin Rezayee