Form Anti-Spam (Full Version)

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ttjager -> Form Anti-Spam (4/20/2007 21:15:22)

Please forgive me if this has already been discussed, but I can't find any threads on the topic.

What type of form validation uses the blurred and/or distorted words that the submitter must dicypher in order to submit their information? Anyone know of any good scripts/programs in this area?

Todd



Tailslide -> RE: Form Anti-Spam (4/21/2007 3:24:55)

You're talking about "Captcha" which has all sorts of nasty accessibility implications.

If you've got PHP on your web server then Mike Cherim's form is a much better way to go: http://green-beast.com/blog/?page_id=71



jaybee -> RE: Form Anti-Spam (4/21/2007 5:31:05)

quote:

which has all sorts of nasty accessibility implications
Not just accessibility but usability as well. Last week I was trying to submit something on a site and the Captcha was so bad, I had 6 attempts at it and finally gave up.

There is a Captcha available, forget where, SMF? which has a button underneath you can press so that it speaks it which is pretty cool but for simplicity, ease of use etc, go with Mike's form which is very good.



womble -> RE: Form Anti-Spam (4/21/2007 18:31:52)

quote:

There is a Captcha available, forget where, SMF? which has a button underneath you can press so that it speaks it which is pretty cool


Yep, I think that's the one. I'd go with Mike's form though - you can't beat 16 different anti-spam measures in one form to stop the little blighters.



marathongirl -> RE: Form Anti-Spam (4/22/2007 5:18:10)


quote:

ORIGINAL: Tailslide

You're talking about "Captcha" which has all sorts of nasty accessibility implications.


Could you please explain what sort of "nasty accessibility implication".

We use one but the number/letters you have to copy are very plain to read, no confusion as to what they are, I have seen ones which are a right royal pain to use. But what else is not good about them?

Thanks
Luce



womble -> RE: Form Anti-Spam (4/22/2007 5:29:52)

For a start, anyone who's blind and using a screen reader to access the web won't be able to see the captcha image and therefore won't be able to submit the form successfully. People who are partially sighted or have a very limited field of vision, or one of many visual difficulties may have severe problems using it.

As Jaybee said, there is captcha available that also has audio support, but that too has problems, including on the ones I've tried, some very dodgy pronouciation of letters.



marathongirl -> RE: Form Anti-Spam (4/22/2007 6:30:16)

Ah, maybe that is where our one is different, it doesnt use images it generates new "real" numbers/letters each time, I am not sure how it is scripted as I did not do that page, but we have had the site for around 5 months and dont get any unwanted submittals or spam email. At the moment the site is down as we are having a database added and something has gone wrong .. lol .... but when it is up I will give you the link to the form page.



womble -> RE: Form Anti-Spam (4/22/2007 6:48:29)

If it's captcha it uses images, it's just some have more "interference" in the background than others. If it was plain text, even if it's dynamically generated, the bots would be able to read it and submit just like anyone else. Even with images though apparently some of the more sophisticated bots around these days can bypass them. Even captcha isn't 100% spam proof.



marathongirl -> RE: Form Anti-Spam (4/22/2007 6:54:16)

No, ours are not images and we have never had spam. We had the form specially made for us by a coder and he guarantees it wont attract spam bots, so far in 5 months it hasn't. Maybe it is not called "captcha" but it looks identical and the numbers/letters have to be typed in. I am not sure how they are produced, but either we are very lucky or it takes a lot longer than 5 months to attract spambots. But he did guarantee the form would not get spammed, so ???



Reflect -> RE: Form Anti-Spam (4/23/2007 7:56:02)

You can do this sans images, it uses an array to build the hexidecimal "image". I use it on one of my sites.

Take care,

Brian



wilbilj -> RE: Form Anti-Spam (6/29/2009 2:53:38)

Hello

I was wondering if anyone has used Mike Cherim's form? Was it easy or difficult to setup?

Thanks

Bill



Tailslide -> RE: Form Anti-Spam (6/29/2009 6:05:58)

Mike's form is brilliant - use it a lot.

Easy enough to set up. Only gets complicated if you need to start adding or changing fields a lot.



wilbilj -> RE: Form Anti-Spam (7/6/2009 19:38:01)

Hello

I would be willing to pay someone that has previously setup Mike Cherim's form script to set it up on my contact page?

Thanks

Bill



BobbyDouglas -> RE: Form Anti-Spam (7/8/2009 12:24:00)

If you're looking to apply some kind of anti-spam validation to an existing form, jCap is an amazing script. Check out Eliminate Spam Bots

You add some javascript code to your page, and modify 2 lines on your form. There's very little configuring and it stops nearly all spam.

The forms I create, now have the form tag and submit buttons being outputted via javascript. So spammers who have JS disabled, won't have the form tag to submit the form, and when JS is enabled, jCap prevents them from completing the form. It's a win win either way.



ou812 -> RE: Form Anti-Spam (7/8/2009 14:36:12)

quote:

The forms I create, now have the form tag and submit buttons being outputted via javascript. So spammers who have JS disabled, won't have the form tag to submit the form, and when JS is enabled, jCap prevents them from completing the form. It's a win win either way.


I've not thought of that. Good idea when going the JS route!



MCD -> RE: Form Anti-Spam (7/8/2009 15:55:06)


quote:

ORIGINAL: jaybee

quote:

which has all sorts of nasty accessibility implications
Not just accessibility but usability as well. Last week I was trying to submit something on a site and the Captcha was so bad, I had 6 attempts at it and finally gave up.

There is a Captcha available, forget where, SMF? which has a button underneath you can press so that it speaks it which is pretty cool but for simplicity, ease of use etc, go with Mike's form which is very good.


Been there, done that and bought the T-shirt. It drove me zonkers.



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