# US 2018/0026679 A1 · Method for processing data by means of an electronic data-acquisition device, corresponding device and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026679 A1 - Document ID: US20180026679A1 - Status: Published application - Kind: A1 - Application number: 15/656,502 - Filed: 2017-07-21 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Ingenico Group - Applicants: Ingenico Group - Inventors: Marc Beunardeau - Web page: https://patentgrep.com/patent/US20180026679A1 ## CPC - H04B 5/77: for interrogation - G06Q 20/3227: {using secure elements embedded in M-devices} - G06Q 20/3278: {RFID or NFC payments by means of M-devices} - G06Q 20/352: {Contactless payments by cards} - H04K 1/003: {by varying carrier frequency at or within predetermined or random intervals (H04K1/04 takes precedence)} - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 12/06: Authentication - H04W 12/08: Access security - H04B: TRANSMISSION - 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 - H04K: SECRET COMMUNICATION; JAMMING OF COMMUNICATION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for processing data by an electronic data-acquisition device, requesting to obtain data from an electronic data-providing device. The electronic data-acquisition device and the electronic data-providing device communicate with each other by using a short-range wireless (NFC) communications technology defining a transmission/reception reference frequency. The method includes the following acts performed by the electronic data-acquisition device: determining a frequency of transmission/reception of an interrogation signal that is different from said transmission/reception reference frequency, as a function of a frequency-determining parameter, delivering an interrogation frequency; and after determining the interrogation frequency, transmitting the interrogation signal to said data-providing device at the interrogation frequency. ## Claims ### Claim 1 A method for processing data by an electronic data-acquisition device, requesting to obtain data from an electronic data-providing device, the electronic data-acquisition device and the electronic data-providing device communicating with each other by using a short-range wireless communications technology defining a transmission/reception reference frequency, the method comprising the following acts; the electronic data-acquisition device determining a frequency of transmission/reception of an interrogation signal that is different from said transmission/reception reference frequency, as a function of a frequency-determining parameter, delivering an interrogation frequency; and after determining the interrogation frequency, the electronic data-acquisition device transmitting the interrogation signal to said data-providing device at the interrogation frequency. ### Claim 2 (depends on 1) The method for processing data according to claim 1, wherein the act of determining frequency comprises modifying the frequency as a function of the frequency-determining parameter. ### Claim 3 (depends on 1) The method for processing data according to claim 1, wherein the act of determining frequency is implemented by a frequency-determining component of the electronic data-acquisition device, said frequency-determining component being under exclusive control of a trusted execution environment (TEE) of said electronic device. ### Claim 4 (depends on 1) The method for processing data according to claim 1, comprising: receiving, by a frequency-determining component of the electronic data-acquisition device, a request for obtaining data; obtaining, by the frequency-determining component, the frequency-determining parameter; determining the transmission/reception frequency of said signal, as a function of the frequency-determining parameter, delivering the interrogation frequency; transmitting the interrogation signal to the electronic data-providing device at said interrogation frequency. ### Claim 5 (depends on 4) The method for processing data according to claim 4, furthermore comprising subsequently to transmitting the interrogation signal: receiving, from the electronic data-providing device, a response signal sampled at said interrogation frequency; obtaining a sequence of bits from said response signal, as a function of said interrogation frequency; converting said sequence of bits into a set of data; transmitting said set of data. ### Claim 6 (depends on 4) The method for processing data according to claim 4, wherein the act of receiving, by the frequency-determining component of the electronic data-acquisition device, the request for obtaining data, is at least partly implemented by a private applications interface and comprises issuing an application authorization. ### Claim 7 (depends on 6) The method for processing data according to claim 6, wherein the act of issuing an application authorization comprises: obtaining at least one of: a piece of data representing an applications identifier of the calling application, called an applications identifier; or obtaining a piece of data representing a calling applications layer, called an applications layer identifier; determining an authorization for executing the determining component as a function of at least one of said applications identifier or said applications layer identifier. ### Claim 8 (depends on 1) The method for processing data according to claim 1, wherein the frequency-determining parameter is a multiplier factor. ### Claim 9 (depends on 8) The method for processing data according to claim 8, wherein said multiplier factor has a value ranging from 1.1 to 1.8. ### Claim 10 (depends on 8) The method for processing data according to claim 8, wherein the value of the multiplier factor is determined randomly, in a range of values from 1.1 to 1.8. ### Claim 11 (depends on 8) The method for processing data according to claim 8, wherein the value of the multiplier factor is determined by the component for determining at the reception of a request for obtaining data by contactless transfer. ### Claim 12 An electronic data-acquisition device comprising: means for obtaining data from an electronic data-providing device, the electronic data-acquisition device and electronic data-providing device communicating with each other by using a short-range wireless communications technology defining a transmission/reception reference frequency; means for transmitting an interrogation signal to said data-providing device at an interrogation frequency; and means for determining a frequency of transmission/reception of said signal, different from said transmission/reception reference frequency, as a function of a frequency-determining parameter, delivering the interrogation frequency. ### Claim 13 A non-transitory computer-readable medium comprising a computer program product stored thereon, which comprises program code instructions for executing a method, when the instructions are executed on a computer of an electronic data-acquisition device, wherein the instructions configure the electronic data-acquisition device to: request to obtain data from an electronic data-providing device, the electronic data-acquisition device and the electronic data-providing device communicating with each other by using a short-range wireless communications technology defining a transmission/reception reference frequency, comprising; determining a frequency of transmission/reception of an interrogation signal that is different from said transmission/reception reference frequency, as a function of a frequency-determining parameter, delivering an interrogation frequency; and after determining the interrogation frequency, transmitting the interrogation signal to said data-providing device at the interrogation frequency.