TheFutureBodyNetworkAreyoutiredofwiresthatspreadalloveryourdeskandmakeyourteapourontoyourkeyboard?Ifso,youmayconsiderusingdevices(设备)thatusetechnologieslikeWi-FiorBluetooth.Neitherofthemsendsinformati
TheFutureBodyNetwork
Areyoutiredofwiresthatspreadalloveryourdeskandmakeyourteapourontoyourkeyboard?Ifso,youmayconsiderusingdevices(设备)thatusetechnologieslikeWi-FiorBluetooth.Neitherofthemsendsinformationthroughwires.Itsoundsperfect,doesn'tit?Butthisisnottheendofthestory.
Scientistsarenowtryingtousethehumanbodytodoasimilarjob.Theyhavecomeupwiththeideaofsendinginformationoverthesmallelectricfieldonthesurfaceoftheskin.Todothis,atransmitter(传送器)couldbebuiltintoyourpocketoraportabledevicelikeanMP3player.Thistransmitterwouldthenuseyourskin'selectricalfieldtosendinformationtoareceivingdevice.Sincethiskindoftransmissioncanonlygoasfaras20cm,thereceiverwouldhavetobeclosetosomepartofyourbody.
Byusingthisbodynetwork,youwouldn'tneedawiretolinkyourMP3playerinyourpockettotheheadphonesinyourears,ortosendtoyourcomputerthepicturesfromadigitalcamerahangingaroundyourneck.Moreover,youcanexchangeelectroniccardsorsharemusicfileswithothersbyshakinghands,dancingcheek(脸颊)tocheek,orkissingeachother.
Now,herecomesaquestion.WhywouldanyonewanttousetheirbodyasanetworkwhenWi-FiandBluetoothalreadyexist?TheanswerliesinthefactthatwithWi-FiorBluetooth,itishardtolimitthesignalsonlytoyourownuse.Inabusyplace,youcanneverknowwhomightstealyourinformation.However,bodynetworkingissafer.Itishardforotherpeopletopickupsignalssentoverthesurfaceofyourskinsincethisbodynetworkonlyhasalimitof20cmfromyourbody.Thus,nooneelsecaneasilypickupandinterpretyoursignals.
Moreover,themostimportantuseofbodynetworkinginthefuturemaywellbecommunicationwithinthebodyratherthanjustonitssurface.Imaginehavinganumberofsmalldevicesimplantedunderyourskinandusingthemtocontrolyourownnervoussystem.Inotherwords,imaginethatyouhaveapowerfulin-bodycomputer.Whatdoyouthinkofthisidea?Doesitsoundcool,likebeingacharacterinthemovieRoboCop?Orwouldyouprefertobejustanordinaryhumanbeing?
40.What'sthemainideaofthepassage?___
A.Technologyiscausingustobelazy
B.Technologyisdoingharmto