I just don't see how it's any more accessible than using an image, in
fact it's probably less accessible because of the massive filesize and
CPU load.
Personally I prefer the question and answer style spam protection. You
have an easy question like "how do you spell orange?" which has to be
answered correctly (you'd probably allow case-insensitivity), as soon as
spam bots start getting through you just change the question.
- Andrew Ingram
Svip wrote:
I discovered that anyone have yet to discuss HEC's. So I thought I
might as well start this topic. HEC stands for "HTML Encoded
CAPTCHA". It's quite easy, it is using means of HTML and CSS to
create the image which was originally broadcasted in png/jpeg/gif or
perhaps even svg.
It is just about being creative. I know what you're thinking.
Usually you would at maximum send 3 bytes per pixel, but now weren't
going to send like fifty time as much! Yes, it is a waste of traffic,
but it has a large security scale I should imagine.
Anyway, here is a HEC, I created:
http://sviip.dk/tut/captcha.php
And its source:
http://sviip.dk/tut/captcha.phps
Note: I already created the code for an image, I use on another site
- where it is actually png, because I don't require that top notch
security.
Conclusion: I would say it has its advantages, but I fear its
disadvantages are too large over its advantages. Only use it when
spambots are on your door step every second... and if you can afford
the extra traffic.
Regards,
Svip
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