Add a "switch back to captcha" button.

[dlikhten]

I have friends who's dyslexia prevents them from following a line with their finger, nothing to do with training or intelligence, its a full blown bonafied disability and asking them to trace a line is pretty much an impossible task as it will take them a very very long time to do if even possible.

Its the only thing that comes to mind regarding these.

[wjcrowcroft]

Yeah, I fully agree - having a 'switch to captcha' link seems like a crucial factor in getting motionCAPTCHA to production-ready level