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1、DoYouHearWhatIHear?FingerprintingSmartDevicesThroughEmbeddedAcousticComponentsAnupamDasNikitaBorisovMatthewCaesarUniversityofIllinoisatUniversityofIllinoisatUniversityofIllinoisatUrbana-ChampaignUrbana-ChampaignUrbana-Champaigndas17@illinois.edunikita@illinois.educaesar@illi
2、nois.eduABSTRACTtothenumerousadvantagestheyprovideconsumers,fromenter-tainmentandsocialapplicationstobusinessandadvancedcomput-Thewidespreaduseofsmartdevicesgivesrisetoprivacyconcerns.ingcapabilities.However,smartphones,withalltheirinteractive,Fingerprintingsmartdevicescanje
3、opardizeprivacybyallowingre-location-centric,andconnectivity-basedfeaturesimposethreaten-moteidentificationwithoutuserawareness.Westudythefeasibil-ingconcernsonuserprivacy[9,34,39,51].ityofusingmicrophonesandspeakersembeddedinsmartphonesInthispaperwethoroughlyanalyzeatechniqu
4、eforfingerprint-touniquelyfingerprintindividualdevices.Duringfabrication,sub-ingthehardwareofsmartphones.Theobservationisthateveniftleimperfectionsariseindevicemicrophonesandspeakers,whichthesoftwareonmobiledevicesisstrengthened[35,62,70],hardware-induceanomaliesinproducedandr
5、eceivedsounds.Weexploitlevelidiosyncrasiesinmicrophonesandspeakerscanbeusedtothisobservationtofingerprintsmartphonesthroughplaybackandfingerprintphysicaldevices.Duringmanufacturing,imperfectionsrecordingofaudiosamples.Weexploredifferentacousticfeaturesareintroducedintheanalogc
6、ircuitryofthesecomponents,andasandanalyzetheirabilitytosuccessfullyfingerprintsmartphones.such,twomicrophonesandspeakersareneveralike.ThroughanOurexperimentsshowthatnotonlyisitpossibletofingerprintde-observationalstudy,wefindthattheseimperfectionsaresubstantialvicesmanufactured
7、bydifferentvendorsbutalsodevicesthathaveenough,andprevalentenough,thatwecanreliablydistinguishbe-thesamemakerandmodel;onaveragewewereabletoaccuratelytweendevicesbypassivelyrecordingaudiostreams,andconduct-attribute98%ofallrecordedaudioclipsfrom50differentAndroidingsimplespec
8、tralanalysesontherecordedaudiostreams.Oursmartphones.Ourstudyalsoidentifiest
