phonerciseMSC2InteractionDesigntutorialDesign:MobilephoneAimandstructureThisisadesignexerciseintwoparts.Thefirstpartusesinformationfromuserstodevelopadesignforamobilephone.Thesecondpartusesdifferentevaluationtechniquestoassessthedesign.Therearetwoaims:todemonstrat。functionality,andsoon.Trytoidentifytherealissuesthatpeopleconsiderwhenusingamobilephone.Trytoseewhatfactorswillinfluencetheirdecisionaboutwhichphonetobuy.Itisthesethatmustmotivateyourdesign.Makealistofthefeaturesyoufeelyourphonemusthave.Interface:How。faceitself.Aesthetics:Considerissuesofoverallcolour,size,shape,texture;ofbuttonspacing,layout,colourandfeedback;displaysizeandplacement;informationdisplay.Youwillusethisanalysisasthebasisofyourdesign.Modellingtechniquessuchastaskanalysiscanhelptoclarifythis,。nSection11.4.2.Theaimoftheheuristicevaluationistodebugthedesign;tohighlightthepointsinthedesignthatareinconsistentorlikelytocauseusersproblems.Exchangedesignswithacolleague.Trytoevaluatetheirdesignusingalloftheirdesignmaterialandtheusabilitycriteriagi。omtheheuristicandcooperativeevaluations.Noticewheretheyhighlightproblemsinthedesign.Alsolookforinstancesinwhichthedesignallowstaskstobeeasilyaccomplished.Comparethetwotechniquesandnoteanythingwhichisidentifiedbyonetechniqueandnottheother.RedesignReappraise。yourdesigncarefullyinthelightoftheevaluationprocess.Carefullylookatthingsthatcauseconfusion,atthefunctionsthataretherebutmayneverbeused,andatthecommentsmadeaboutthegoodandbadpointsofyourdesign.Usingyourexperienceofothersdesignsandthecommentsonyour。own,youhaveagreatdealofinformationaboutwhatshouldbeincluded,andexcluded,fromanewdesign.Itmayhelptoworkingroupsoffourorfive,forthisfinalstage,thoughitisuptoyou.Poolyourdesignsandtrytocomeupwithanewversionofthephone.Itshouldincorporateallthe。goodfeaturesofthepreviousprototypes,whilstavoidingalltheproblemsthattheymayhavesuffered.Oncedecidedupon,eachofyoushouldproduceafinallabelleddrawingoftheidealphone.MobilePhone:UserResponsesAgroupofpeoplewereinterviewedtoobtaintheirviewsonthefeaturestheyw。ouldexpecttofindintheiridealmobilephone.Someofthepeoplecurrentlyuseamobilephone,othersdonot.Givenbelowarethe(edited)textsoftheirresponses.A:IwanttokeeptrackofthenumberofcallsthatImake,andthecostofthecalls.SinceIusethephoneforbusinessithastobe。smallbutpowerfulbutcantcostalottobuy.IdontwanttofusswiththatstupidaerialthingthatyouhavetoflipupinordertouseitandIwanttobeabletokeepringingpeoplebackiftheyrebusy-asIsaidithastobehand-heldbutthatsitreally.B:Ohhh-amobilephone!Well,itjust。hastoringpeopleandletpeopleringyou,doesntit?C:ItmustbeabletostoretelephonenumbersasIwonthavemytelephonebookwithme,butIdunnohowIdsearchforthenumbers-perhapsapadonwhichyoucouldwritethemdownwouldbeagoodidea-nothatsdaftreallyisntit,Imeanitss。upposedtobeelectronic,whataboutavolumecontrolforringing?Iremembersomeonesphonegoingoffinameeting.Itwasreallyloudandshewassoembarrassed.whataboutthebuttons,willithavepressbuttonsoradial?OhIcandecide-wellIlikethedialpersonally,Ithinkitsaesthetically。pleasing,butsomepeoplelikebuttons.Idunnoreally.RunningthemcostsalotofmoneysoIsupposeIdliketobeabletotellhowmuchIdspentthatdayoncalls-sortofgetmybillasIgoalong,Isuppose.WillIbeabletoturnitoff?Oh-Ihavetodecide,doI?Well,IsupposeIshouldh。aveitwithmeandonallthetimebutwhatifIdidntwanttobeinterrupted?SoIsupposeIdwanttoturnitoff.but...