# US 12,120,508 B2 · Method for duplicating near field communication card and electronic device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,508 B2 - Document ID: US12120508B2 - Status: Granted - Kind: B2 - Application number: 17/499,575 - Filed: 2021-10-12 - Published: 2022-02-03 - Granted: 2024-10-15 - Earliest claimed: 2019-04-16 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Yi Yang; Hyuntae Lee; Sungjun Lim - Web page: https://patentgrep.com/patent/US12120508B2 ## CPC - H04W 12/06: Authentication - G06K 7/10: by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation - G06K 19/067: Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards {also with resonating or responding marks without active components} - G06Q 20/32: using wireless devices - G06Q 20/34: using cards, e.g. integrated circuit [IC] cards or magnetic cards - G08B 21/18: Status alarms (G08B21/02 takes precedence) - H04L 9/08: Key distribution {or management, e.g. generation, sharing or updating, of cryptographic keys or passwords (network architectures or network communication protocols for supporting key management in a packet data network H04L63/06)} - H04L 63/0853: {using an additional device, e.g. smartcard, SIM or a different communication terminal (cryptographic mechanisms or cryptographic arrangements for entity authentication involving additional secure or trusted devices H04L9/3234)} - H04W 12/041: Key generation or derivation - H04W 12/47: using near field communication [NFC] or radio frequency identification [RFID] modules - H04B 5/70: specially adapted for specific purposes - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract The disclosure relates to duplication of a near field communication (NFC) card, and an operating method for an electronic device may comprise: detecting a tag of the NFC card; obtaining at least one parameter related to the NFC card; and based on the NFC card satisfying a specified condition, producing a duplicate card of the NFC card by storing the at least one parameter. The specified condition may include the features wherein the NFC card is a designated type of a card and the NFC card uses a default key. ## Claims ### Claim 1 A method of operating an electronic device, the method comprising: receiving a first input for registering card information of a Near Field Communication (NFC) card with the electronic device; detecting tagging of (the NFC) card; acquiring at least one Radio Frequency (RF) parameter related to the NFC card including a Selection Acknowledge (SAK) from the NFC card; identifying the NFC card satisfying a specified condition, based on the identification of the NFC card being of a specified type by checking value of the acquired SAK and the NFC card using a default key; based on the NFC card satisfying the specified condition, generating a copy card information of the NFC card by storing the acquired at least one RF parameter. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one parameter includes information which can be acquired without any authentication using a key, and the at least one RF parameter comprises at least one of an Answer to Request (ATQA), or a Unique Identifier (UID). ### Claim 3 (depends on 1) The method of claim 1, further comprising determining whether the NFC card is of the specified type by checking value of a specific bits of the-SAK. ### Claim 4 (depends on 1) The method of claim 1, further comprising determining whether the NFC card uses the default key by attempting an authentication of the NFC card using the default key. ### Claim 5 (depends on 1) The method of claim 1, further comprising, based on the NFC card not satisfying the specified condition, acquiring information on the NFC card from a Trust Service Management (TSM) server, and registering the card information by storing an instance generated based on the acquired information in a secure element. ### Claim 6 (depends on 1) The method of claim 1, wherein the at least one parameter is stored in a Rich trusted Execution Environment (REE) or a Trusted Execution Environment (TEE). ### Claim 7 (depends on 1) The method of claim 1, further comprising: identifying that the NFC card is duplicated by another user; displaying warning informing of the duplication by the another user; and displaying information on the another user. ### Claim 8 An electronic device comprising: a wireless communication circuit configured to support a Near Field Communication (NFC) protocol; a display; a processor operatively connected to the wireless communication circuit and the display; and a memory operatively connected to the processor, wherein the memory stores instructions which, when executed, cause the processor to: receive a first input for registering card information of an external card supporting NFC in the electronic device, receive Radio Frequency (RF) parameters including an Answer to Request (ATQA), a Selection Acknowledge (SAK), and a Unique Identifier (UID) from the external card through the wireless communication circuit, based on the first input, store the received RF parameters identify whether the external card is a specified type of card, based on the received SAK, register the card information by obtaining a data block from the external card using a default key, based on the external card being the specified type of card, receive a second input for using the registered card information, determine at least some of the stored RF parameters for using the card information, based on the card information of the external card being the specified type of card, and communicate with an external electronic device using the determined at least some of stored RF parameters for using the card information, through the wireless communication circuit. ### Claim 9 (depends on 8) The electronic device of claim 8, wherein the instructions, when executed, cause the processor to determine whether the external card is the specified type of card, based on a sixth bit of the received SAK. ### Claim 10 (depends on 8) The electronic device of claim 8, wherein the instructions, when executed, cause the processor to, based on the data block not being able to be duplicated from the external card using the default key, control the display to display a notification indicating failure in the duplication of the external card through the display. ### Claim 11 (depends on 10) The electronic device of claim 10, wherein the instructions, when executed, cause the processor to, based on the data block not being able to be obtained from the external card using the default key, acquire information on the external card from a Trust Service Management (TSM) server and store an instance generated based on the acquired information in a secure storage. ### Claim 12 (depends on 8) The electronic device of claim 8, wherein the instructions, when executed, cause the processor to determine whether an authentication information request is received from the external electronic device and delete the stored RF parameters, in response to the authentication information request, based on a determination result. ### Claim 13 (depends on 8) The electronic device of claim 8, wherein the RF parameters are stored in a Rich trusted Execution Environment (REE) or a Trusted Execution Environment (TEE). ### Claim 14 A method of operating an electronic device, the method comprising: receiving a user input for selecting card information; in response to the selection of the card information, identifying information indicating a type of the card information; based on the information indicating the type of the card information, changing a configuration of a near field communication controller (NFCC) to use at least one Radio Frequency (RF) parameter related to the card information; and transmitting the at least one RF parameter to an external reader device through the NFCC wherein the information indicating the type of the card information is generated by storing information which can be acquired without any authentication using a key when an original card of the card information is a specified type card, and wherein the at least one RF parameter includes a Selection Acknowledge (SAK) for the external reader device to identify whether the type of the copy information corresponds a specified type of card. ### Claim 15 (depends on 14) The method of claim 14, wherein the at least one parameter includes: information which can be acquired without any authentication using a key, and the at least one RF parameter comprises at least one of an Answer to Request (ATQA), or a Unique Identifier (UID). ### Claim 16 (depends on 14) The method of claim 14, wherein the changing the configuration of the NFCC includes: stopping a discovery operation of the NFCC, changing default routing of the NFCC to a host, changing a parameter of the host to the at least one parameter, and starting the discovery operation of the NFCC. ### Claim 17 (depends on 14) The method of claim 14, further comprising: recovering the configuration of the NFCC based on the use of the copy card ends. ### Claim 18 (depends on 17) The method of claim 17, wherein the recovering the configuration of the NFCC includes: stopping a discovery operation of the NFCC, rolling back default routing of the NFCC and a parameter of a host, and starting the discovering operation of the NFCC. ### Claim 19 (depends on 14) The method of claim 14, further comprising: based on an authenticating using the key being requested by the external reader after the at least one parameter is transmitted, regenerating the copy card by acquiring information on an original card from a Trust Service Management (TSM) server and storing an instance generated based on the acquired information in a secure storage. ### Claim 20 (depends on 19) The method of claim 19, further comprising: displaying a screen making a request for retagging on the external reader to the user after regenerating the copy card.