# US 12,183,139 B2 · Facial recognition frictionless access control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,139 B2 - Document ID: US12183139B2 - Status: Granted - Kind: B2 - Application number: 18/447,079 - Filed: 2023-08-09 - Published: 2023-11-30 - Granted: 2024-12-31 - Earliest claimed: 2018-05-21 - Assignees: Tyco Fire & Security GmbH - Applicants: Tyco Fire & Security GmbH - Inventors: Terence Neill; Anne Gallagher; Derek J. Boyes; Peter Lawrence - Web page: https://patentgrep.com/patent/US12183139B2 ## CPC - G06V 40/175: {Static expression} - G07C 9/00563: {using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns} - G06F 16/53: Querying - G06V 20/52: Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69) - G06V 40/168: {Feature extraction; Face representation} - G06V 40/172: {Classification, e.g. identification} - G06V 40/20: Movements or behaviour, e.g. gesture recognition (recognition of facial expressions G06V40/16) - G08B 7/06: using electric transmission {, e.g. involving audible and visible signalling through the use of sound and light sources} - G06T 2207/30232: Surveillance - G06V 2201/033: of skeletal patterns - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract An access control system can include a camera that detects an image regarding a subject, a database maintaining information, a facial recognizer that receives the image and identifies a facial feature of the subject based on the received image and the facial information maintained by the database, and a processor to alert security or another user when an authorized user accessing an area of a building is under duress, when an unauthorized user is accessing an area of a building by tailgating after an authorized user, when an authorized user has not provided two-factor authentication, or when an authorized user is in a particular area of the building. ## Claims ### Claim 1 An access control system, comprising: a camera configured to record an image of two or more subjects approaching an access point; and a processor in communication with the camera and configured to: identify a subject based on the image; identify at least one additional subject based on the image; determine movement information regarding the subject and the at least one additional subject; determine a likelihood of risk of tailgating by the at least one additional subject based on information specifying whether the subject is expected to be accessing an access point at a particular time period, and whether the subject will be accompanied by one or more unknown subjects; determine whether the at least one additional subject has permission to move through the access point based on the subject, the at least one additional subject, the movement information, and the likelihood of risk of tailgating; and permit or deny access movement of the subject or the at least one additional subject through the access point based on whether the at least one additional subject has permission. ### Claim 2 (depends on 1) The access control system of claim 1, further comprising: a database configured to store a scheduler corresponding to the subject, wherein the scheduler includes scheduling information indicating a time the subject has permission to move through the access point, wherein the processor is further configured to determine whether the at least one additional subject has permission to move through the access point further based on the scheduler. ### Claim 3 (depends on 2) The access control system of claim 2, wherein the scheduler further includes a counter identifying a number of additional subjects having permission to move through the access point with the subject, wherein the processor is further configured to determine whether the at least one additional subject has permission to move through the access point further based on the counter. ### Claim 4 (depends on 1) The access control system of claim 1, wherein to determine the movement information, the processor is further configured to determine the movement information regarding the subject and the at least one additional subject based on one or more of a location, a direction, or speed information of at least one of the subject or the at least one additional subject. ### Claim 5 (depends on 1) The access control system of claim 1, further comprising: an alarm device configured to output an indication of a tailgating event based on the at least one additional subject not having permission. ### Claim 6 (depends on 1) The access control system of claim 1, wherein the processor is further configured to: determine the subject has permission to move through the access point; and deny movement by the subject through the access point based on whether the at least one additional subject has permission. ### Claim 7 A method comprising: receiving, from a camera, an image of two or more subjects approaching an access point; identifying a subject based on the image; identifying at least one additional subject based on the image; determining movement information regarding the subject and the at least one additional subject; determining a likelihood of risk of tailgating by the at least one additional subject based on information specifying whether the subject is expected to be accessing an access point at a particular time period, and whether the subject will be accompanied by one or more unknown subjects; determining whether the at least one additional subject has permission to move through an access point based on the subject, the at least one additional subject, the movement information, and the likelihood of risk of tailgating; and permitting or denying access movement of the subject or the at least one additional subject through the access point based on whether the at least one additional subject has permission. ### Claim 8 (depends on 7) The method of claim 7, further comprising: storing scheduling information indicating a time the subject has permission to move through the access point; and determining whether the at least one additional subject has permission to move through the access point further based on the scheduling information. ### Claim 9 (depends on 8) The method of claim 8, wherein the scheduling information includes a counter identifying a number of additional subjects having permission to move through the access point with the subject, and further comprising: determining whether the at least one additional subject has permission to move through the access point further based on the counter. ### Claim 10 (depends on 7) The method of claim 7, further comprising: determining movement information regarding the subject and the at least one additional subject based on one or more of a location, a direction, or speed information of at least one of the subject or the at least one additional subject. ### Claim 11 (depends on 7) The method of claim 7, further comprising: outputting, via an alarm device, an indication of a tailgating event based on the at least one additional subject not having permission. ### Claim 12 A non-transitory computer-readable device having instructions thereon that, when executed by at least one computing device, causes the at least one computing device to perform operations comprising: receiving, from a camera, an image of two or more subjects approaching an access point; identifying a subject based on the image; identifying at least one additional subject based on the image; determining movement information regarding the subject and the at least one additional subject; determining a likelihood of risk of tailgating by the at least one additional subject based on information specifying whether the subject is expected to be accessing an access point at a particular time period, and whether the subject will be accompanied by one or more unknown subjects; determining whether the at least one additional subject has permission to move through the access point based on the subject, the at least one additional subject, the movement information, and the likelihood of risk of tailgating; and outputting, via an alarm device, an indication of a tailgating event based on the at least one additional subject not having permission. ### Claim 13 (depends on 12) The non-transitory computer-readable device of claim 12, wherein the operations further comprise: storing scheduling information indicating a time the subject has permission to move through the access point; and determining whether the at least one additional subject has permission to move through the access point further based on the scheduling information. ### Claim 14 (depends on 13) The non-transitory computer-readable device of claim 13, wherein the scheduling information includes a counter identifying a number of additional subjects having permission to move through the access point with the subject, and the operations further comprising: determining whether the at least one additional subject has permission to move through the access point further based on the counter. ### Claim 15 (depends on 12) The non-transitory computer-readable device of claim 12, wherein the operations further comprise: determining movement information regarding the subject and the at least one additional subject based on one or more of a location, a direction, or speed information of at least one of the subject or the at least one additional subject. ### Claim 16 (depends on 12) The non-transitory computer-readable device of claim 12, wherein the operations further comprise: permitting or denying access movement of the subject or the at least one additional subject through the access point based on whether the at least one additional subject has permission. ### Claim 17 (depends on 12) The non-transitory computer-readable device of claim 12, wherein the operations further comprise: determining the subject has permission to move through the access point; and denying movement by the subject through the access point based on whether the at least one additional subject has permission.