A security control

May sites have an image control on the registration form.  The image presents a blurry image of letters and numbers and protects against robot account creations.
What are these types of controls called?  Can you point me towards an example for MVC?
Thank you.
wilfordrocksAsked:
Who is Participating?
 
Neil RussellConnect With a Mentor Technical Development LeadCommented:
They are called CAPTCHA's and MVC version can be found here on CodePlex

http://captchamvc.codeplex.com/releases/view/114341
0
All Courses

From novice to tech pro — start learning today.