Very nice approach to get vis­i­tors to prove that they are actual humans and not (spam)robots. A jQuery captcha approach that asks the vis­i­tor to slide/unlock an ele­ment like on the iPhone.

Much bet­ter that the nor­mal captcha meth­ods where users have to type in let­ter com­bi­na­tions that are so hard to read that I find my self  press­ing the “can’t read the let­ters above” but­ton a lot.

more info@http://www.aboone.com/javascript-iphone-lock-slider-with-jquery

Usability · usability onder · usable forms