recaptcha audio edition

In other words, this new audio CAPTCHA uses the same idea as the standard visual reCAPTCHA: we play audio from old time radio shows that speech recognition software could not decipher correctly, and then use the results of humans solving these CAPTCHAs to transcribe the old time radio shows.

nette (ich weiss nicht, ob besonders praktikable) idee: audio recaptchas (via)