RotateAntispam is a library that is used to create powerful anti-spam protection. Version 1.00 includes windows generation with randomly rotated picture and user response checking. The author of this library is Igor Mino, but the author of the original idea (use of image rotation as anti-spam protection) is Daniel Ivaniš.
In the next window you can test how RotateAntispam works. Entered data are not recorded or sent anywhere. Antispam will be shown after form submission.