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