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NetTalk Web Server => Web Server - Ask For Help => Topic started by: Alberto on February 13, 2009, 06:20:40 AM

Title: How to add a "security distorted picture" field
Post by: Alberto on February 13, 2009, 06:20:40 AM

Hi,
Today, in many web pages, when you register a user you see an image merged with a number or a string and you have to repeate this number in a field to finish your registrattion.
How can I do it?
Thaks
Alberto

Title: Re: How to add a "security distorted picture" field
Post by: Mike Grigsby on February 15, 2009, 08:29:32 PM

Have you been to the Captcha site? (http://www.captcha.net/). The implementation is not that difficult looking, but I haven't had time to get to it.

Title: Re: How to add a "security distorted picture" field
Post by: Bruce on February 15, 2009, 10:47:08 PM

Hi Michael,

CapeSoft Draw has a Captcha function for doing this.

Incidentally, you may not need anything sophisticated. I was reading a post on codinghorror last night, and it was pointed out that his captcha is a fixed graphic (always the same graphic.) Apparently it's sufficient that the spam engines just move on. Coding Horror is quite a popular site, and it's working for him. My guess is that unless your site is specifically targeted a high-tech solution is not all that necessary.

Cheers
Bruce