Security and privacy
2010Peoplesign
Photo based captcha
Quiet3 points6 comments
ermac
1 Show HN that got attention, 2010. 3 points in all.
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- Peoplesign (2010)
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- Peoplesign (3 points)
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1 Show HN that got attention, 2010. 3 points in all.
Security and privacy
2010Photo based captcha
Quiet3 points6 comments
Makers can hide their page. See how to opt out.