CAPTCHA's are a necessary evil, nobody likes them but they are needed to thwart away the real evil. Various alternative solutions to image based CAPTCHA's are now being developed and tested to make things as simple as possible for humans still protecting automated exploitation of web-services.

MotionCAPTCHA is one such promising development, the jQuery CAPTCHA plugin is based on the HTML5 Canvas Harmony procedural drawing tool and requires users to sketch the shape they see in the canvas in order to submit a form.

At the moment, MotionCAPTCHA is just a proof-of-concept and uses client-side gesture recognition, the next releases will feature the ability to use this in production environments as a serious CAPTCHA alternative.