Outbound Link Summary:
Network 3000:
20 years ago

captcha'd in inaccessibility.
now also orf.at needed to implement captcha image challenges for the sake of dividing bots from users.
this certainly must be a sad, however intelligible and necessary move. because captchas are problematic.
captchas are an accessibility black hole and a poor mousetrap.
jon udell concludes they obviously are better suited for games than for a web-adequate protection from bots and spammers.
they are certainly a real challenge for the smartest ones turning willing users into compliable robots.