Fingerprint scanner - Wikipedia

Fingerprint scanners are security systems of biometrics. They are used in police stations, security industries, smartphones, and other mobile devices. Fingerprintscanner FromWikipedia,thefreeencyclopedia Jumptonavigation Jumptosearch Electronicdeviceusedtocaptureadigitalimageofthefingerprintpattern Thisarticlepossiblycontainsoriginalresearch.Pleaseimproveitbyverifyingtheclaimsmadeandaddinginlinecitations.Statementsconsistingonlyoforiginalresearchshouldberemoved.(November2019)(Learnhowandwhentoremovethistemplatemessage) Astand-alonefingerprintscanner,suchasoneusedattheentrancetoabuilding Fingerprintscannersaresecuritysystemsofbiometrics.Theyareusedinpolicestations,securityindustries,smartphones,andothermobiledevices. Contents 1Function 2Typesoffingerprintscanners 3Constructionforms 4Usageform 4.1Stand-alonereaders 4.2Integratedreaders 5Seealso 6References Function[edit] Everyonehaspatternsoffrictionridgesontheirfingers,anditisthispatternthatiscalledthefingerprint.Fingerprintsareuniquelydetailed,durableoveranindividual'slifetime,anddifficulttoalter.Becausetherearecountlesscombinations,fingerprintshavebecomeanidealmeansofidentification. Typesoffingerprintscanners[edit] Therearefourtypesoffingerprintscanners:[1]opticalscanners,capacitancescanners,ultrasonicscanners,andthermalscanners.Thebasicfunctionofeverytypeofscanneristoobtainanimageofaperson'sfingerprintandfindamatchforitinitsdatabase.Themeasureofthefingerprintimagequalityisindotsperinch(DPI).[2] Opticalscannerstakeavisualimageofthefingerprintusingadigitalcamera. CapacitiveorCMOSscannersusecapacitorsandthuselectricalcurrenttoformanimageofthefingerprint.Thistypeofscannertendstoexcelintermsofprecision. Ultrasonicfingerprintscannersusehighfrequencysoundwavestopenetratetheepidermal(outer)layeroftheskin. Thermalscannerssensethetemperaturedifferencesonthecontactsurface,inbetweenfingerprintridgesandvalleys. Allfingerprintscannersaresusceptibletobefooledbyatechniquethatinvolvesphotographingfingerprints,processingthephotographsusingspecialsoftware,andprintingfingerprintreplicasusinga3Dprinter.[3] Constructionforms[edit] Fingerprintscanneronasmartphone(lowerleft) Therearetwoconstructionforms:thestagnantandthemovingfingerprintscanner. Stagnant:Thefingermustbedraggedoverthesmallscanningarea.Thisischeaperandlessreliablethanthemovingform.Imagingcanbelessthanidealwhenthefingerisnotdraggedoverthescanningareaatconstantspeed. Moving:Thefingerliesonthescanningareawhilethescannerrunsunderneath.Becausethescannermovesatconstantspeedoverthefingerprint,imagingissuperior. Usageform[edit] Thissectionneedsexpansion.Youcanhelpbyaddingtoit.(July2021) Stand-alonereaders[edit] Microsoftreleasedafingerprintreaderin2005.[4] Integratedreaders[edit] Fromearly2000,somelaptopswithPCCardsupportcanbeequippedwithreaders;forexample,CompaqArmadaE500canbeoptionallyequippedbyexternalfingerprintreadersince2000-thereadermodulewasreleasedbyToshiba.[5]IBMproducedlaptopswithintegratedreaderssince2004.[6]Apple'smarketingnameofelectronicfingerprintrecognition,knownasTouchID,wasintroducedin2013onlyforsmartphones,andlaptopoptionwasreleasedonlyin2016.Theimplementationwasdelayeduntil2013justbecausetheintegratedwithopticaltrackpadscannerwerebepatentedbyRIM(Blackberry)in2004.[7]Blackberryproducedsmartphoneswithreaderssince2010-thefirstmodelwithfeaturewasabudgetBlackberryCurve.[8] Seealso[edit] WikimediaCommonshasmediarelatedtoFingerprintscanners. Fingerprint#Captureanddetection References[edit] ^Rouse,Margaret(March2021)."ExpertsAgree:FaceIDIsNotTheAnswer,In-DisplayFingerprintSensorsAre".display.E3displays.Retrieved8March2021. ^Sadasivuni,KishorKumar;Houkan,MohammadTalal;Taha,MohammadSaleh;Cabibihan,John-John(August2017)."Anti-spoofingdeviceforbiometricfingerprintscanners".2017IEEEInternationalConferenceonMechatronicsandAutomation(ICMA).IEEE:683–687.doi:10.1109/icma.2017.8015898.ISBN 978-1-5090-6758-9.Archivedfromtheoriginalon2021-01-17.Retrieved2020-10-27. ^Winder,Davey."HackersClaim'Any'SmartphoneFingerprintLockCanBeBrokenIn20Minutes".Forbes.Archivedfromtheoriginalon2019-12-19.Retrieved2019-12-19. ^Luepke,Lara."MicrosoftWirelessIntelliMouseExplorerwithFingerprintReader".CNET.Retrieved2021-07-02. ^Vaidya,Gopika."CNN.com-Technology-Toshibaoutfitslaptopswithfingerprintreader-November22,2000".edition.cnn.com.Retrieved2021-07-02. ^"IBMIntroducingFingerprintReaderintoLaptop|Security|TechNewsWorld".www.technewsworld.com.Retrieved2021-07-02. ^Sacco,Al(2013-10-04)."BeforeTouchID:BlackBerryFiledforTrackpad-Fingerprint-ScanPatentin'04".CIO.Retrieved2021-07-02. ^Cha,Bonnie."BlackBerryCurve8520review:BlackBerryCurve8520".CNET.Retrieved2021-07-02. 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