Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
Are You Human? CAPTCHA’s Many Ways of Asking the Same Question
(
techi.com
)
2 points
by
jaybol
on May 13, 2010
|
hide
|
past
|
favorite
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
