Recently, I was in a situation where Facebook asked me to enter some CAPTCHA code. I usually don’t have problems with it, but when I got asked to enter some characters that I don’t even have on my keyboard, I was stunned. How am I supposed to do that? Thanks to the spam bots all over the world, today’s CAPTCHA codes are so much complicated that you can hardly read them. We, as a society, will soon need some new methods to identify as a human and not a programmed bot.
MotionCAPTCHA might be a great candidate for replacing the standard textual confirmations. The idea behind it is brilliant; you get a shape which you have to redraw. Shapes are simple, a triangle or a skewed line, basic doodles you would do on a piece of paper. The realisation is definitely great, because it doesn’t require from you to be pixel-perfect, you can make big mistakes, but as long as your mouse (or trackpad) movement looks like a shape in the picture – you’ll pass.
MotionCAPTCHA is a jQuery CAPTCHA plugin that requires users to sketch the shape they see in the canvas in order to submit a form. At the moment, it’s just a proof-of-concept, (no IE support) but the next releases will see progressive enhancement and the ability to use this in production environments as a serious CAPTCHA alternative.
A sample of motion captcha