首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The average automatic teller machine(ATM)is not very smart. It will give money to anyone who has the right card and punches four
The average automatic teller machine(ATM)is not very smart. It will give money to anyone who has the right card and punches four
admin
2019-03-27
65
问题
The average automatic teller machine(ATM)is not very smart. It will give money to anyone who has the right card and punches four or five keys in the right order. Some analysts estimate that as many as 30% of ATM transactions worldwide are
cases of theft
. To increase security at cash machines , some banks have tried to make their ATMs a little smarter. A small camera on the machine looks directly into the eye of every customer. It scans one iris and compares the tiny patterns of ridges, dots, and other features to a code in its computer. If there is a match, the ATM will start counting out cash. If not, a message is automatically sent to the nearest police station.
Iris-scanning is one fast-growing form of biometric identification—determining who someone is by examining features of the body. One of the earliest biometric techniques was fingerprinting. The lines on fingertips are unique to each person, so not even identical twins have the same fingerprints. Fingerprinting has become famous as a way of finding out who committed a crime, but it very often fails. A careful criminal can wear gloves, avoid touching things, or even alter his fingerprints by burning, cutting, or scraping them. In the search for a more reliable system, security experts have focused on the eye.
Like a fingerprint, every iris is, for all practical purposes, unique. Each person’s right iris is e-ven different from his or her left one. A low-cost digital camera, like the kind installed at ATM machines, can easily detect hundreds of different features in the iris. The chance of two irises having the same features is close to zero. Tests have shown that iris-scanners are very hard to fool. They can tell the difference between a real iris and a false one. They can see right through coloured contact lenses, eyeglasses, and even mirrored sunglasses. Although many criminals are willing to burn or cut their fingers in pursuit of the perfect crime, few would be willing or able to alter their irises.
To make iris-scanning work, a computerized database has to match certain iris features with certain people. This means that each ATM customer has to allow a bank to photograph his or her iris and keep that highly personal information in a computer. Some people have worried, however, that an increased use of iris-scanning will lead to a dangerous loss of privacy. By mounting iris-scan cameras in public places, governments could track a private citizen all day long without the person’s knowledge. This would be a great advantage to the police, but it could also give corrupt officials a new way to control their opponents. The military’s development of tiny robots suggests that government iris-scanners could even invade private homes!
ATM transactions are often cases of theft, where an unauthorized user takes【A1】______. To decrease insecurity, some banks have installed iris-scanning machines at ATMs. These small cameras scan the user’s iris, recording its features and【A2】______them to a digital fde. Every person has a【A3】______iris, making iris identification highly reliable. Earlier efforts at bio-metric identification often relied on fingerprints. However, fingerprints can easily be【A4】______through cutting, burning or scraping. Iris scanners are so effective that they can even see through contact lenses and mirrored sunglasses. Use of iris scanners would provide great ad-vantages to the police. However, others worry about a loss of【A5】______
【A3】
选项
答案
unique
解析
(文章第三段首句提到Like a fingerprint,every iris is,for all practical purposes,unique。)
转载请注明原文地址:https://kaotiyun.com/show/RqNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Bicyclesharinghasbeenahotlydebatedtopicoverthepasttwoyears.BicyclesarenothingexotictoChinesepeople.Inthe19
Bicyclesharinghasbeenahotlydebatedtopicoverthepasttwoyears.BicyclesarenothingexotictoChinesepeople.Inthe19
傣族的泼水节(Water-SplashingFestival)是在四月十三至十五号,这三天也是他们族的新年节日。傣族的节庆活动一共分三个层次,一天一个花样儿。第一天,大家清扫各家房屋,清理四周环境。【T1】第二天,人们倾巢而出,涌向各个大街小巷,用桶盛满
In1964,asevereearthquakeoccurrednearAnchorage,Alaska.Itwasreportedtohavereachedamagnitudeof8.4______theRichte
Thedeaninyourdepartmentrealizedthatstudentswerenotthathappyintheirdormsandaskedyoutowriteareportonthemat
A.EveningentertainmentB.MaintouristattractionC.GoodtimestovisitD.OtherplacesofinterestE.Introductionandlocat
Whenitisdifficulttofindspacetobuildmorehousesandoffices,weautomaticallybuildupwards—webuildskyscrapers.Now,
Whatoccursonceineverymonth,twiceineverymoment,butnotonceinathousandyears?
Inhisearly20s,MichaelWestknewveryclearlyhisholygoal:toconqueraginganddeath,"I’mtalkingaboutendingthesuffer
Whichcodematchestheshapeorpatterngivenattheend?
随机试题
以下严禁装药爆破的情况是()。
某电脑公司为了赢得顾客的信赖,扩大市场份额,采取了一系列措施,例如加强产品质量宣传,进行市场调查,收集顾客反馈信息,增加售后服务网点,通过质量管理体系认证。以下是顾客满意的基本特性的是_________。
研究耐盐碱的海水稻.有助于突破我国18亿亩有限的耕地资源约束,并在很大程度上缓解人类水资源、可耕地和粮食三大危机。下列关于海水稻的说法,错误的是()。
关于马克思主义法学对法的本质的界定,下列说法正确的是
各地中国共产党早期组织成立以后,主要进行的工作有()
Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsareformed.Itisnoteasytoexplainwhyoneperson
Youwillhearfiveshortrecordings.Fivespeakersaretalkingaboutdelegatingatwork.Foreachrecording,decidewhatadvice
—"TheGreenswatchTVallthetime."—"______dotheBrowns."
ResearchersfromtheUniversityofPlymouthinEnglandwonderedwhethermoodmightaffectthewaykidslearn.Tofindout,they
I’msorrytosaythatyouhavemadeno(improve)______onthedesignatall.
最新回复
(
0
)