NetTalk Central
NetTalk Web Server => Web Server - Ask For Help => Topic started by: Gregg Matteson on June 25, 2007, 03:02:31 AM
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Subject says it all. Anyone implemented CAPTCHA with a Web server app?
Care to share how?
Thanks for your time.
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Gregg,
I am using Capesoft Draw and generating the Captcha images to be used for registration.
I have a worker thread that gererates random numbers and letters, uses Draw to create a png image and then add the image name and generated text into a memory table. Every 24 hours the images and memory table are deleted and then recreated.
On the WebForm, I "Display" a random image and have an input field for the user. The image text is saved to a session variable. Using the validation embeds, I check the user input against the session variable.
If it has not already been sugested, I am going to post a feature request for a Captcha template.
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David,
I own Draw as well but never gave it a thought to use it for that. Very clever!
I just found a possible alternative:
http://www.archreality.com/jcap/ it's a javascript that creates the Captcha .
Thanks very much for your response.