CAPTCHA
CAPTCHA (an acronym for Completely Automated Public Turing Test To Tell Computers and Humans Apart) was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas Hopper and John Langford of Carnegie Mellon University. CAPTCHA is a program that protects websites against bots by generating tests that humans can pass but current computer programs cannot.
In order to claim the reward from a faucet, beside entering your cryptocurrency address (BTC / LTC / DOGE or other Altcoin address) you have to solve a CAPTCHA.
They continue to develop as the bots are smarter and smarter.
Here are the newest CAPTCHAS:
In order to claim the reward from a faucet, beside entering your cryptocurrency address (BTC / LTC / DOGE or other Altcoin address) you have to solve a CAPTCHA.
They continue to develop as the bots are smarter and smarter.
Here are the newest CAPTCHAS:
And below, you can see the most common ones you meet on the faucets.
One step Google reCAPTCHA
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Two steps Google reCAPTCHA
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