# US 11,908,296 B2 · System, device and methods for protecting a user device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,296 B2 - Document ID: US11908296B2 - Status: Granted - Kind: B2 - Application number: 17/412,926 - Filed: 2021-08-26 - Published: 2022-03-03 - Granted: 2024-02-20 - Earliest claimed: 2020-09-01 - Assignees: NXP B.V. - Applicants: NXP B.V. - Inventors: Ulrich Andreas Muehlmann; Michael Schober; Ghiath Al-kadi - Web page: https://patentgrep.com/patent/US11908296B2 ## CPC - G08B 13/2402: {Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting (mechanical aspects of the tags, e.g. related to locking E05B73/0017; RFID readers G06K7/00; RFID tags G06K19/00; access control systems G07C9/00; anti-theft control in point of sale systems G07G3/003; security seals G09F3/03)} - H04B 1/7163: using impulse radio - H04W 4/029: Location-based management or tracking services - H04W 12/08: Access security - H04W 12/63: Location-dependent; Proximity-dependent - H04W 12/64: using geofenced areas - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract In accordance with a first aspect of the present disclosure, a system is provided, comprising: a user device to be monitored for unauthorized displacement, an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with an external localization device and to perform at least one localization operation through said UWB communication channel, and a processing unit configured to detect said unauthorized displacement of the user device by analyzing an output of said localization operation. In accordance with a second aspect of the present disclosure, a localization device is provided, comprising: an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with an external system and to perform at least one localization operation through said UWB communication channel, and a processing unit configured to detect an unauthorized displacement of a user device comprised in said external system by analyzing an output of said localization operation. In accordance with further aspects of the present disclosure, corresponding methods are conceived and corresponding computer programs are provided. ## Claims ### Claim 1 A system, comprising: a user device to be monitored for unauthorized displacement, wherein the unauthorized displacement is a movement of the user device to a location at which the user device is not authorized to be present according to a predefined rule; an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with an external localization device and to perform at least one localization operation through said UWB communication channel using a UWB communication protocol; a processing unit configured to: detect said unauthorized displacement of the user device by analyzing an output of said localization operation, and transmit, through an out-of-band communication channel using a second communication protocol that is different from the UWB communication protocol, an instruction to disable one or more functions or applications of the user device to the external system. ### Claim 2 (depends on 1) The system of claim 1, wherein the user device comprises the UWB communication unit and the processing unit or wherein the UWB communication unit and the processing unit are attached to the user device. ### Claim 3 (depends on 2) The system of claim 2, wherein the UWB communication unit and the processing unit are attached to the user device by a physical bonding. ### Claim 4 (depends on 1) The system of claim 1, wherein the processing unit is further configured to disable one or more functions of the user device or one or more applications executed by the user device in response to detecting the unauthorized displacement. ### Claim 5 (depends on 1) The system of claim 1, wherein the processing unit is configured to detect the unauthorized displacement by comparing location data output by said localization operation with one or more predefined sets of location data indicative of authorized locations of the user device. ### Claim 6 (depends on 5) The system of claim 5, wherein the predefined sets of location data represent areas or zones in a building. ### Claim 7 (depends on 1) The system of claim 1, wherein the processing unit is a secure element. ### Claim 8 A localization device, comprising: an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with an external system and to perform at least one localization operation through said UWB communication channel; a processing unit configured to: detect an unauthorized displacement of a user device comprised in said external system by analyzing an output of said localization operation, wherein the unauthorized displacement is a movement of the user device to a location at which the user device is not authorized to be present according to a predefined rule, and transmit, through an out-of-band communication channel different from the UWB communication channel, an instruction to disable one or more functions or applications of the user device to the external system. ### Claim 9 (depends on 8) The localization device of claim 8, wherein the processing unit is further configured to activate an alarm or transmit a warning signal in response to detecting the unauthorized displacement. ### Claim 10 A method, comprising: setting up, by an ultra-wideband (UWB) communication unit of a system that includes a user device, a UWB communication channel with an external localization device and performing at least one localization operation through said UWB communication channel; detecting, by a processing unit of said system, an unauthorized displacement of the user device by analyzing an output of said localization operation, wherein the unauthorized displacement is a movement of the user device to a location at which the user device is not authorized to be present according to a predefined rule; and transmitting, through an out-of-band communication channel different from the UWB communication channel, an instruction to disable one or more functions or applications of the user device to an external system. ### Claim 11 (depends on 10) The method of claim 10, wherein the processing unit further disables one or more functions of the user device or one or more applications executed by the user device in response to detecting the unauthorized displacement. ### Claim 12 A method, comprising: setting up, by an ultra-wideband (UWB) communication unit of a localization device, a UWB communication channel with an external system and performing at least one localization operation through said UWB communication channel; detecting, by a processing unit of the localization device, an unauthorized displacement of a user device comprised in said external system by analyzing an output of said localization operation, wherein the unauthorized displacement is a movement of the user device to a location at which the user device is not authorized to be present according to a predefined rule; and transmitting, through an out-of-band communication channel different from the UWB communication channel, an instruction to disable one or more functions or applications of the user device to an external system. ### Claim 13 (depends on 12) The method of claim 12, wherein the processing unit further activates an alarm or transmits a warning signal in response to detecting the unauthorized displacement. ### Claim 14 A system, comprising: a user device to be monitored for unauthorized displacement, wherein the unauthorized displacement is a movement of the user device to a location at which the user device is not authorized to be present according to a predefined rule; an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with an external localization device and to perform at least one localization operation through said UWB communication channel; and a processing unit configured to: detect said unauthorized displacement of the user device by analyzing an output of said localization operation, and transmit, through an out-of-band communication channel different from the UWB communication channel, an instruction to disable one or more functions of the user device to an external system. ### Claim 15 (depends on 14) The system of claim 14, wherein the user device comprises the UWB communication unit and the processing unit. ### Claim 16 (depends on 14) The system of claim 14, wherein the UWB communication unit and the processing unit are attached to the user device by a physical bonding. ### Claim 17 (depends on 14) The system of claim 14, wherein the processing unit is further configured to disable one or more applications executed by the user device in response to detecting the unauthorized displacement. ### Claim 18 (depends on 14) The system of claim 14, wherein the processing unit is configured to detect the unauthorized displacement by comparing location data output by said localization operation with one or more predefined sets of location data indicative of authorized locations of the user device. ### Claim 19 (depends on 18) The system of claim 18, wherein the predefined sets of location data represent areas or zones in a building.