“Irisscan(虹膜扫描),please,”thebank’scomputervoicetellsy...
问题详情:
“Iris scan (虹膜扫描), please,” the bank’s computer voice tells you . You step up and the computer reads your eye, comparing it to the stored file it has of your iris. The images had better match—otherwise you won’t be able to get your money.
Iris scanning and other technologies, such as fingerprint and voice scanning, have appeared in many science fiction movies in the past. Today, these advanced technologies are part of the real world. They are common at work, the bank, the airport, and your local prison. The iris scan, fingerprint scan, and voice scan are all examples of biometrics(生物测定学), a fast developing area of automatic personal identification technology. Basically, biometrics uses various ways to verify a persons identity, based on the individual’s unique characteristics, including fingerprints, voices, irises, body heat patterns, facial images, handprints, signatures and so on.
Biometrics identification systems have a number of advantages over password systems. The primary advantage is that an individual has to be physically present in order to be identified. Another important advantage is that there are no passwords to remember, forget, lose or steal.
The voice scan is the simplest and most affordable form of biometrics. It only requires a computer, a microphone and the correct software. The software records a subject’s voice and then compares it to a stored voice sample for identification purposes.
For additional safety, fingerprint and handprint scans can also be employed. Fingerprint scans take the image of a fingerprint and compare it to a stored file of prints. Handprint scans identify the unique features of a hand.
Iris scans currently give the highest level of accuracy among all the available biometrics systems. Another technology, full facial scans, is currently in use at border crossings and airports. Facial scanning equipment can actually track and identify moving faces within a crowd.
The potential of biometrics is exciting and encouraging. With continued development, testing and application, current technologies will become even more effective in the future. Soon, the days of password and car keys will be gone. Just don’t leave home without your fingerprints!
24. The first paragraph serves as a(n) .
A. conclusion B. explanation C. comment D. example
25. The underlined word “verify” in Paragraph 2 probably means “ ”.
A. change B. confirm C. develop D. protect
26. Which is the most accurate form of biometrics?
A. The iris scan B. The fingerprint scan C. The voice scan D. The facial scan
27. What is the author’s attitude towards the future of biometrics?
A. He is uncertain about it. B. He feels doubtful about it.
C. He feels hopeful about it. D. He is worried about it.
【回答】
DBAC
知识点:科普环保类阅读
题型:阅读理解
-
下列化学用语正确的是A.CH4分子的球棍模型: B.乙烯的结构简式:CH2CH2 C.*...
问题详情:下列化学用语正确的是A.CH4分子的球棍模型: B.乙烯的结构简式:CH2CH2 C.*化*的分子式:NaCl D.K+的结构示意图:【回答】A知识点:物质结构元素周期律题型:选择题...
-
下列说法正确的是:( )A.1molN2的质量是14g B.H2SO4的摩尔质量是98gC.H...
问题详情:下列说法正确的是:( )A.1molN2的质量是14g B.H2SO4的摩尔质量是98gC.H2O的摩尔质量是18g/mol D.1molHCl的质量是36.5g/mol【回答】C知识点:物质的量单元测试题型:选择题...
-
下列化学用语表达正确的是( )A.羟基的电子式 B.乙烯的结构简式是CH2CH2C.醛基的结...
问题详情:下列化学用语表达正确的是()A.羟基的电子式 B.乙烯的结构简式是CH2CH2C.醛基的结构简式是—COH D.淀粉的分子式是(C6H10O5)n【回答】D知识点:糖类油脂蛋白质单元测试题型:选择题...
-
我国现存最早的数学名著是A.《九章算术》 B.《缀术》 C.《大明历》 ...
问题详情:我国现存最早的数学名著是A.《九章算术》 B.《缀术》 C.《大明历》 D.《水经注》【回答】A知识点:大河流域人类文明的摇篮题型:选择题...
相关文章
- Iliveinabigcitywithalotofhomelesspeople.Luckilythere’re...
- ‘Irisscan(虹膜扫描),please,’thebank’scomputervoicetellsyou...
- FiveThingsAmbitiousPeopleNeverSay ◆“Ican’tdothis-it’s...
- Peter’sChinesewasverypoor,sohecouldn’tmakehimself
- Ifeelverylucky,becausewhatI’veaccomplishedinsportsis ...
- Ifeelverylucky,becausewhatI’veaccomplishedinsportsis ...
- We’veallexperiencedpeerpressure(同伴压力).Ithappenstoeveryb...
- 完形填空。Weliveinthe“computerage”,Peoplelikescientists,teac...
- FiveThingsAmbitiousPeopleNeverSay ◆“Ican’tdothis—it’s...
- Ifoverweightpeopleeatlessandtakemoreexercise,they’llso...