MSCABImage (captcha code) is the best cure from nasty posting bots (robots). These bots create hundreds email accounts on your web-based mail servers and spam from them, fill your forums with thousands of commercial postings and screw your online polls.
How it works. ABImage Component generates random number and make a hard-to-recognize picture from it. Your Web Application asks visitor to read the number and type it in a textbox. Human can easily recognize the number, but there is no way how a bot can do that. As soon as the form will be posted back, application compare the random number with the number posted by visitor and authorize a human or reject a bot.
The number can be generated by internal random number generator or can be set by the application.
Image can be extra protected from recognition with adding random noise.
What is new in this release:
Requirements:
Windows + IIS version 4.0 or above
Comments not found