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Questions tagged [captcha]

For questions about the CAPTCHA used on Stack Exchange sites to verify that you're a person and not a spam-bot.

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2 votes
0 answers
115 views

I can not see the CAPTCHA box

In posting an answer to a question, I get the following: But I can not see the CAPTCHA box in the page. What should I do?
L.J.R.'s user avatar
  • 11k
3 votes
1 answer
110 views

Why must I prove to a machine that I am a human?

From time to time I am urged to click through so-called captchas in order to prove to the machine that I am a human when posting answers. The captchas often are not precise: E.g., some minutes ago I ...
Ulrich Diez's user avatar
  • 28.9k
3 votes
2 answers
157 views

Captcha it is often only for my account?

I wanted to understand if Captcha, computer security codes to distinguish between humans and bots, often happen to me in this period when I have to add an answer on the site TeX.SE. In the last week ...
Sebastiano's user avatar
  • 54.4k
10 votes
2 answers
232 views

CAPTCHA despite logged in with good reputation

I just posted my first answer on this site, sharing a solution I've found to a problem that was not yet listed. Given a high enough reputation score on another SE site, I received 100 reputation bonus ...
Luc's user avatar
  • 214