An Accessible CAPTCHA system for People with Visual Disability―Generation of Human/Computer Distinguish Test with Documents on the Net
An Accessible CAPTCHA system for People with Visual Disability―Generation of Human/Computer Distinguish Test with Documents on the Net
复制标题
视觉障碍人士的无障碍验证码系统——利用网络文档生成人/机区分测试
DOI：
10.1007/978-3-319-07509-9_12
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
T. Okamoto and H. Kikuchi
中科院分区：
文献类型：
--
作者：
M. Yamaguchi;T. Nakata;T. Okamoto and H. Kikuchi
我们提出了一种新的验证码方案，该方案不会成为残疾人的感知障碍。我们的验证码系统以口头方式生成测试，因此它的使用不限于特定的感知渠道。测试由几个短语组成，有两种测试：人类用户试图(1)将一个意义陌生的短语与其他短语区分开来，(2)识别他们之间的共同主题。在我们的测试中，我们使用开放的文档作为材料。请注意，网络上有相当大量的文档，所以我们每次都可以生成全新的测试。有人可能会说，对手可以在互联网上查找短语，并获得几个提示。我们的系统通过替换短语中的辅音来隐藏来源，该机制旨在模仿自然语言中称为“辅音层次”的现象。
We propose a new scheme of CAPTCHA that does not become a perceptual barrier for disable people. Our CAPTCHA system generates the tests in verbal style, so its use is not limited in specific perceptual channels. The tests are composed of several phrases and there are two kinds of tests: Human users try to (1) distinguish a phrase of strange meaning from others, and (2) identify the common topic among them.In our test we utilize open documents for material. Note that there is quite a large amount of documents on the net, so we can generate brand-new tests every time. One may say that adversaries can look for the phrases over the Internet and get several hints. Our system hides the sources by substituting the consonants of the phrases against such an attack.The mechanism is designed to imitate the phenomenon called “consonant gradation” of natural languages.