I activated the SCode plugin in the comment in this blog. SCode is Captcha kind of test given to verify whether it’s a human whom’s the website interact with, or is it just some machine program trying to access this website. In short, it either scrambled a text or display some numeric number in graphics format. So those bustard spammer can’t simply get through with their programs or scripts.
Nevertheless, Captcha is effective to filter out the spams. But it violates website’s accessibility. Rules No. 1: you always provide some alternative access to disabled users to your website. But nope, they can’t view your scrambled images or the number on the icons…there’s no other way a blind person would be able to comment on this site.
I am feeling bad with this even though I don’t think there’s any disbaled people would access to this blog. But I am tired to check out the comment list or reading emails for the approval of comments. Here’s the sacrifice.
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I just want to try out the Captcha feature actually. The securtiy code (some numeric number) I have to key in is shown in typical computer fonts. I wonder if this would be effective to filter out spam, as the spammer should have some ways to recognise the security code since it is in typical computer fonts.
posted 09:26 AM on December 6, 2005 · comment by yowching · #
Most of the current spam-software are scanning websites and do text analysis to perform comment or trackback spam.
For example, if there's a software grab this current page, and it would see some html tag of:
img border="0" src="http://www.yowkee.com/cgi-bin/plugins/SCode/mt-scode.cgi?code=10
which is a thing it didn't able to decode yet.
Of course in future they could have grab the image and do the graphical pattern recognition -- right now it's just too tedious and cost expensive (CPU time) for them.
posted 09:40 AM on December 6, 2005 · comment by yowkee · #