A CAPTCHA is a type of challenge-response test used in computing as an attempt to ensure that the response is generated by a person.

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39
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7answers
4k views

Can we do better than CAPTCHA?

There are a variety of different forms of CAPTCHA and other strategies in order to prevent spam. To briefly list a few: Simple math or word questions. Obfuscated text. JavaScript-based CAPTCHAs. ...
31
votes
10answers
8k views

Is there an easier and more user friendly alternative to CAPTCHA?

I'm working on setting up a CAPTCHA on a project, and just thought about the user experience of it. I personally find them tedious, especially if they're too difficult. Even these are pretty easy ...
88
votes
14answers
15k views

CAPTCHA on mobile: what are the alternatives?

From a UX perspective, CAPTCHA's are bad, bad, bad. But let's say we have this as a requirement. And it's for a hybrid app (compiled app, but built upon an HTML5 platform). I'm trying to find out: ...
9
votes
9answers
513 views

barebone registration: is password repitition and captcha really essential?

If you design a barebone registration form which only requires email address and password as essentials can you omit the password repetition and captcha without too much technical trouble? I ...
8
votes
4answers
1k views

Does Captcha Really Affect UX?

From my own personal experience, I don't like CAPTCHA when filling a form, especially encountering unrecognizable picture or calculation-required one. When I submit some advises to the website, it's ...
10
votes
2answers
353 views

Testing on Googles new reCAPTCHA

Has anybody run user tests on Google's new reCAPTCHA? My company is looking at using it and wants to run some tests before we implement. If you haven't tested it, do you know of any places where ...
12
votes
2answers
3k views

Honeypot captchas and accessibility

I have been looking at ways to prevent spam bots from posting, regstering and performing actions on my site. Initially, I thought about implementing ReCAPTCHA using its API. However, I have found ...
7
votes
3answers
572 views

Has Captcha become common knowledge?

I am doing a business site for a web company, and was wondering if Captcha has become so well-known, that it no longer needs an explanation ? Right now there is only a input box, the captcha image ...
6
votes
6answers
1k views

Asirra or Captcha?

I've just heard about "Asirra" and tried it. But, I am a little bit confusing about using. What is your choice for usability? Asirra or CAPTCHA, and why?