首页
登录
职称英语
No document is safe any more. Faking once the domain of skilled deceivers th
No document is safe any more. Faking once the domain of skilled deceivers th
游客
2023-07-08
13
管理
问题
No document is safe any more. Faking once the domain of skilled deceivers that used expensive engraving(雕刻)and printing equipment, has gone mainstream since the price of desktop-publishing systems has dropped. In ancient times, faking was a hanging offence. Today, desktop counterfeiters have little reason to worry about prison, because the systems they use are universal and there is no means of tracing forged documents to the machine that produced them. This, however, may soon change thanks to technology development by George Chiu, an anti-faking engineer.
His approach is based on detecting imperfections in the print quality of documents. Old-school court scientists were able to trace documents to particular typewriters based on quirks(瑕疵)of the individual keys. He employs a similar approach, exploiting the fact that the rotating drums and mirrors inside a printer are imperfect pieces of engineering which leave unique patterns of banding in their products.
Although these patterns are invisible to the naked eye, they can be detected and analyzed by computer programs, and it is these that Dr. Chiu has spent the past year devising. So far, he cannot trace individual printers, but he can tell pretty reliably which make and model of printer was used to create a document.
That, however, is only the beginning. While it remains to be seen whether it will be possible to trace a counterfeit(伪造的)document back to its guilty creator on the basis of manufacturing imperfections, Dr. Chiu is now working out ways to make those imperfections deliberate. He wants to modify the printing process so that unique, invisible signatures can be incorporated into each machine produced which would make any document traceable.
Ironically, it was after years of collaborating with printing companies to reduce banding and thus increase the quality of prints, that he came up with the idea of introducing artificial banding that could encode identification information into a document. Using the banding patterns of printers to secure documents would be both cheap to implement and hard, if not impossible, for those without specialist knowledge and hardware to hide out.
Not surprising, the American Secret Service is monitoring the progress of this research very closely, and is providing guidelines to help Dr. Chiu to travel in what the service thinks is the right direction, which is fine for catching criminals. But how the legal users of printers will react to Big Brother being able to track any document back to its source remains to be seen. [br] The advantage of using banding patterns to trace documents is that it______.
选项
A、is economically affordable and technically practical
B、strengthens the cooperation among printing companies
C、makes printers cheaper and hard to be taken around
D、is able to identify even the most specialized criminals
答案
A
解析
推理判断题。原文说“利用打印机频带模式来确保文件的安全性不仅在安装上成本低,如果可能的话,还可以使那些没有专业知识和硬件的罪犯难以逃脱。"由此可以推知,利用频带模式追踪文件的优势在于经济上可以承受而且技术上可行。故A)与之相符,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/2818965.html
相关试题推荐
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
Initsvariousformsfromfictiontodocumentary,themotionpicturehasbecom
随机试题
文化象征culturalsignificance
班集体的发展目标一般可分为近期、中期和远期三种,目标的提出由易到难、由近到远、逐
请回答下列交通安全设施工程质量检验评定方面的问题。(1)分项工程合格的条件为(
出生3天的男婴,体重2.5kg,生后第1天即出现呕吐,频繁呕吐黄绿色液,一直未排
A.二尖瓣关闭不全 B.三尖瓣关闭不全 C.主动脉瓣狭窄 D.二尖瓣狭窄
计算机病毒是指A.编制有错误的程序 B.设计不完善的程序 C.已被损坏的程序
爆炸性粉尘混合物根据粉尘的特性可分为ⅢA、ⅢB、ⅢC三级。下列爆炸性粉尘混合物属
绩效考评标准()是考评工具失常的主要原因。A.不规范 B.不简洁 C.不清楚
论述编写教科书时应遵循的基本原则,教师怎样才能做到正确使用教科书?
影响混凝土拌合物和易性的因素很多,下列说法正确的是()。A.在混凝土的水胶比保
最新回复
(
0
)