# US 10,373,407 B2 · Access authorization system comprising at least one arrangement of a plurality of microparticles and at least one identification unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,407 B2 - Document ID: US10373407B2 - Status: Granted - Kind: B2 - Application number: 15/570,009 - Filed: 2016-04-27 - Published: 2018-06-07 - Granted: 2019-08-06 - Earliest claimed: 2015-04-29 - Assignees: 3S Simons Security Systems GmbH - Applicants: 3S Simons Security Systems GmbH - Inventors: Rolf Simons - Web page: https://patentgrep.com/patent/US10373407B2 ## CPC - G07C 9/20: involving the use of a pass - B42D 25/23: Identity cards - B42D 25/30: Identification or security features, e.g. for preventing forgery - G06K 19/06018: {one-dimensional coding} - G06K 19/06178: {the marking having a feature size being smaller than can be seen by the unaided human eye} - 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 - B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract An access authorization system comprising at least one arrangement of a plurality of microparticles and at least one identification unit. The arrangement of the microparticles is affixed to the identification unit. The arrangement of the microparticles forms a forgery-proof identification. A microparticle used in the arrangement has at least one first layer and at least one second layer. ## Claims ### Claim 1 An access authorization system comprising: at least one arrangement of a plurality of microparticles, the particular arrangement of microparticles existing exactly once, and at least one identification unit, wherein the microparticles are randomized in shape and have a size such that none of the dimensions of the microparticles exceed approximately 200 micrometers, wherein the arrangement of microparticles is affixed to the identification unit, wherein the arrangement of microparticles forms a forgery-proof identification, and wherein a microparticle comprises at least one first colored layer and at least one second and differently colored layer. ### Claim 2 (depends on 1) The access authorization system according to claim 1, wherein a plurality of arrangements are provided which are each of a different configuration from one another. ### Claim 3 (depends on 2) The access authorization system according to claim 2, wherein each identification unit is associated with exactly one arrangement of microparticles. ### Claim 4 (depends on 1) The access authorization system according to claim 1, wherein the access authorization system further comprises a reader unit by means of which the identification unit can be analyzed. ### Claim 5 (depends on 4) The access authorization system according to claim 4, wherein the reader unit comprises an optical analytics module, by means of which the arrangement of the microparticles can be recorded and analyzed. ### Claim 6 (depends on 4) The access authorization system according to claim 4, wherein the reader unit further comprises a data storage or is configured to be connected to a data storage of the access authorization system, wherein information on the arrangement of the microparticles is stored in said data storage. ### Claim 7 (depends on 4) The access authorization system according to claim 4, wherein the reader unit further comprises at least one processing unit, wherein the access authorization system is structured such that access is only permitted to the processing unit upon the reader unit correctly identifying the identification unit. ### Claim 8 (depends on 7) The access authorization system according to claim 7, wherein the processing unit is a computer system. ### Claim 9 (depends on 7) The access authorization system according to claim 7, wherein the processing unit is a component part of a physical access control unit. ### Claim 10 (depends on 9) The access authorization system according to claim 9, wherein the physical access control unit comprises an access control to a building. ### Claim 11 (depends on 1) The access authorization system according to claim 1, wherein the microparticles are sized such that none of the dimensions of the microparticles exceed 100 micrometers. ### Claim 12 (depends on 1) The access authorization system according to claim 1, wherein the microparticles are sized such that none of the dimensions of the microparticles exceed 60 micrometers. ### Claim 13 An access authorization system comprising: at least one arrangement of a plurality of microparticles, the particular arrangement of microparticles existing exactly once, and at least one identification unit, wherein the microparticles are randomized in shape and have a size such that none of the dimensions of the microparticles exceed 50 micrometers, wherein the arrangement of microparticles is affixed to the identification unit, wherein the arrangement of microparticles forms a forgery-proof identification, and wherein a microparticle comprises at least one first colored layer and at least one second and differently colored layer. ### Claim 14 (depends on 13) The access authorization system according to claim 13 wherein the microparticles have a size such that the dimensions of the microparticles are in the range of 8 to 50 micrometers.