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1、计算机安全策略（Computersecuritypolicy）FingerprintrecognitionandfacerecognitionLet'sfirstlookatthewidelyusedsecondgenerationAuthenTecTruePrinttechnology.Thefirstgenerationoffingerprintrecognitiontechnologyisbasedonopticalrecognitionsystem,becauselightcannotpenet
2、ratethesurfaceoftheskin(deadskinlayer),socanonlyscanthesurfaceoffingerskin,orscanthedeadskinlayer,butnotdeepdermis.Inthiscase,thecleanlinessofthefingersurfacedirectlyaffectstherecognitioneffect.Ifmoredustisstuckonthefinger,theremaybeanidentificationerror
3、.And,ifpeoplefollowafinger,afingerprintfingerprintrecognitionsystem,itmayalsobe,forusers,butalsohasnosecurity.Thedifferencebetweenthesecondgenerationandthefirstgenerationistheuseofcapacitivesensingtechnology,andtheuseofsmallsignalstocreatemountainlikefin
4、gerprintimagesofsemiconductordevices.Becausethedepthtothedermisofthefingers,moredatacapture,notaffectedbythefingersurface,therebyavoidingdustandotherexternalfactors,topreventidentificationerrors,theuseofmoreconvenientandsafe.Facerecognitiontechnologyisth
5、emainusersloggedin,facerecognitiondatabycallingtheauthorizeduserstorage,automaticfacialfeaturelocationforinspectionpersonnel,tofind5facialscansfromreferencepoint,andthencalculatethefacialfeaturevalues,andfinallybythesystemtoconfirmordeny(thewholeprocessc
6、anrefertotheattachedmap).Thistechnologyiscurrentlyusedinnotebookproductsisstillrelativelysmall,Lenovohasintroducedtheuseofthetechnologyrelatedproducts.Inessence,facerecognitionandfingerprintrecognitionareabigstepforwardcomparedtosimplepasswordbooting.But
7、intermsofactualutility,theyarestillonlyabletomeettheneedforhardwareinformationtheftpreventionattheentrylevel.Althoughtheface,fingerprintscanbeusedastheoneandonlythepersonalidentity,buttherealityisthatiftheconversionofWindowsbootpermissionsorjumptotheonly
8、passwordinputinterface,whichcaneasilyjumprecognitionsteps,and"civilization"intothecomputer,thustheprivacyinformationofallusersofthepanoramicview.Therefore,fromthetightsecurityneeds,thetwoisstillalittlemorethanthecontentoft
