在 Perl 中自定义 Google Re Captcha [英] Customize Google Re Captcha in Perl

问题描述

我想自定义 google re captcha 以仅将数字作为验证码选项.是有可能做到的.如果是，那么该怎么做?

I want to customize google re captcha to have only digits as option for verification code. Is is possible to do . If yes then how to do it ?

推荐答案

不，这是不可能的.

reCaptcha 系统旨在提供一种将验证码插入您网站的简便方法.作为一个副作用，它通过使用来自扫描的图像片段作为视觉挑战来帮助数字化书籍.如果只显示数字，那么只能使用书本中已知是数字的单词".这将使 reCaptcha 的次要目标(帮助扫描的转录)失效.

The reCaptcha system is meant as an easy way to plug in a Captcha to your site. As a side effect, it helps digitizing books by using image snippets from scans as a visual challenge. If only numbers should be displayed, then only such "words" from books could be used that are already known to be numbers. This would void the secondary objective of reCaptcha (helping the transcription of scans).

使用数字只会降低系统的安全性(理论上).虽然攻击性 OCR 软件可能难以区分 g 和 9，但现在这变得明确了.

Using numbers only makes your system less secure (in theory). Whereas an attacking OCR software might have difficulty telling apart a g and 9, this now becomes unambiguous.

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