# Security images

**URL:** <https://forum.kirupa.com/t/security-images/196919>\
**Category:** Uncategorized\
**Created:** [August 11, 2006, 9:15pm UTC](https://forum.kirupa.com/t/security-images/196919 "2006-08-11T21:15:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Decfor](https://avatars.discourse-cdn.com/v4/letter/d/c2a13f/32.png) [@Decfor](https://forum.kirupa.com/u/Decfor)\
**Post date:** [August 11, 2006, 9:15pm UTC](https://forum.kirupa.com/t/security-images/196919/1 "2006-08-11T21:15:08Z")

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hey guys.

you know when you register for a website and there is a security image?

its an image with letters or numbers in it, usually squigly and distorted.

the user has to enter the characters in the image into a textbox to verify his humanity, and that he isnt a bot

\<EDIT\>  
this is the kinda thing i mean:

![](http://http://www.cheezy-funnys.com/login2/security_image_ss.jpg)[http://www.cheezy-funnys.com/login2/security\_image\_ss.jpg](http://www.cheezy-funnys.com/login2/security_image_ss.jpg)

\</EDIT\>

how is that done?

i thought it would be an iframe with the image and a hidden field, but surely a bot could read a hidden field?

ive searched the forums, but couldnt find what i was looking for.

so, any ideas as to how its done?

thanx,  
decfor