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What's this supposed to achieve?

Just as with regular captchas, computers will be able to solve this just as soon as there's a financial incentive to program them to do so: that is to say, just as soon as it's at all widely deployed.

Impossible to complete on a touch based mobile device, let alone iOS devices without flash.

Too complicated and busy. A definite interruption to the user flow.

I agree it is complicated and busy, on the other hand I hate having to refresh a CAPTCHA 20 time to find one I can do.

My two concerns would be it seem to load pretty slow for me (5-10 seconds). And what do people without a mouse do? I know there aren't a lot of people with this problem but any organization that has to comply with ADA or section 508 are going to care about it.

Captcha replacement