B[2015'商丘高三一模]Asmorepeople-查字典问答网

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　　B[2015'商丘高三一模]Asmorepeopleusesmartphonestopaybillsandstorepersonalinformationstrictpasswordsecurityhasbecomemoreimportantthanever.Anewstudyshowsthatfree-formgestures―sweepingfingersinsha

　　B[2015'商丘高三一模]

　　Asmorepeopleusesmartphonestopaybillsandstorepersonalinformationstrictpasswordsecurityhasbecomemoreimportantthanever.Anewstudyshowsthatfree-formgestures―sweepingfingersinshapesacrossthescreenofasmartphone一canbeusedtounlockphones.Thesegesturesarelesslikelytobeobservedandreproducedbyothersthantraditionaltypedpasswords.

　　"Allthatittakestostealapasswordisaquickeye"saidoneoftheresearchersofthestudy."Withalltheperson?alinformationwehaveonourphonestodayimprovingtheirsecurityisbecomingincreasinglynecessary.，，Indevelopingasecuresolutiontothisproblemtheresearchersstudiedthepracticalityofusingfree-formgestures.Withtheabilitytocreateanyshapeinanysizeandlocationonthescreen?thesegestureswerepopularaspasswords.Sinceuserscreatethemwithoutfollowingatemplate*theresearcherspredictedthesegestureswouldallowforgreatercomplexity.

　　Theresearcherscarriedoutacreate-test-retestexperi?mentwhere63peoplewereaskedtocreateagesturerecallitandrecallitagain10dayslater.Thesegestureswerecap?turedonarecognizersystemdesignedbytheteam.Usingthisdatatheytestedthecomplexityandaccuracyofeachgestureusijiginformationtheory.Theresultoftheiranalysisisthatpeoplearefavourabletousefree-formgesturesaspasswords.

　　Toputtheiranalysisintopracticetheresearchersthenhadsevenstudentsincomputerscienceandengineeringeachwithconsiderableexperiencewithtouchscreens(触摸屏)，attempttostealafree-formgesturepasswordbyobservingaphoneusersecretly.Noneofthemwereabletocopytheges?tureswithenoughaccuracy.Thesegesturesappeartobeextremelypowerfulagainstattacks.

　　Thoughthetestingisinitsearlystageandwidespreadadaptationofthistechnologyisnotyetcleartheresearchteamplanstocontinuetoanalysethesecurityandmanage?mentoffree-formpasswordsinthefuture.Theybelievethisisthefirststudytoexplorefree-formgesturesaspasswords.Theywillsoonpublishtheirfindings.

　　5.Whatcanwelearnaboutfree-formgestures?

　　A. Theyareimprovingmobilesecurityinaway.

　　B. Userswillhave

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2020-12-09 06:13

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　　B[文章大意]本文是一篇科普文，主要讨论了手机密码的安全性。文章介绍了一种密码设置方式，并提出保护手机中的个人信息还有待继续研发新的密码设置方式。

　　5.A细节理解题。根据第一段的"Thesegesturesarelesslikelytobeobservedandreproducedbyothersthantraditionaltypedpass-words."可知这种密码设置方式能够在某种程度上提高手机的安全性。故选A项。

　　6.D推理判断题。根据文章第四段的"Noneofthemwereabletocopythegestureswithenoughaccuracy.Thesegesturesappeartobeextremelypowerfulagainstattacks."可知，该项研究就是为了验证这种密码设置方式的安全性。故选D项。

　　7.B推理判断题。根据文章最后一段的"Theybelievethisisthefirststudytoexplorefree-formgesturesaspasswords.Theywillsoonpublishtheirfindings."可知选B项。

　　8.D主旨大意题。通读全文可知，本文主要介绍了一种新的密码设置方式。故选D项。

2020-12-09 06:17:07

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