Comments on: Using captcha without displaying it

By: Emanuele

Emanuele — Fri, 19 Feb 2010 18:53:41 +0000

Appear there is a way to avoid the use of captcha with http://keypic.com

By: hypergene

hypergene — Wed, 30 Dec 2009 23:42:52 +0000

@Frederic Klee: Actually non-humans can answer that, too.

By: mp3

mp3 — Wed, 15 Jul 2009 07:37:11 +0000

Thanks for a good idea.

By: Tom Higgy

Tom Higgy — Wed, 10 Jun 2009 16:05:06 +0000

@Christoph: Doesn't that then discriminate against colour-blind users?

By: Hosting

Hosting — Sat, 21 Feb 2009 12:41:24 +0000

Great article, adding it to my bookmarks!

By: Christoph

Christoph — Sat, 11 Oct 2008 18:10:23 +0000

Hi,

good idea. I have a very simple “captcha”, spitting out 6 numbers in 2 different colours. The user is asked for entering the white numbers. Easy but more beautiful than ugly captchas.

Christoph

By: Stefan

Stefan — Tue, 07 Oct 2008 19:50:29 +0000

A small update: I didn’t get a chance yet to set it up again on the new version of the site.

By: WDG

WDG — Wed, 01 Oct 2008 23:12:09 +0000

This is an excellent idea I’d not considered, thanks very much!

I think the method proposed here is better than the honeypot method because not all bots complete all the fields. However, I guess you can work with whatever combination of methods works best for you.

I’m off to setup my hidden captcha!

By: Stefan

Stefan — Wed, 01 Oct 2008 23:11:27 +0000

Yes Devin, I beleive that’s the honeypot Justin was talking about a few comments earlier.

By: Devin Ross

Devin Ross — Wed, 01 Oct 2008 23:08:40 +0000

Hey Stefan,
Your solution is definitely good. I heard another similar solution where you hide an input field using CSS. That way, only a spam bot would fill it out, because a real viewer in a browser wouldn’t see it. I haven’t tried it myself though.