The everyday blog of Richard Bartle.
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4:23pm on Wednesday, 8th October, 2008:
What does this say?
Hmm, how about this?
Put them together and:
That's only a simple experiment, but it seems to suggest you can use persistence of vision as a CAPTCHA.
Not if you get epilepsy, obviously...
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Copyright © 2008 Richard Bartle (email@example.com).