Where do Google CAPTCHA images come from?
we’ve got good news for you: it doesn’t matter. These image-based systems work by tracking mouse movements, click locations, and other variables, not by assessing the user’s individual abilities. In fact, Google’s “No CAPTCHA reCAPTCHA” skips all of the hubbubs, instead simply asking users to click a single box.
Who invented picture CAPTCHA?
reCAPTCHA is owned by Google….reCAPTCHA.
| Original author(s) | Luis von Ahn Ben Maurer Colin McMillen Harshad Bhujbal Manuel Blum |
|---|---|
| Developer(s) | |
| Initial release | May 27, 2007 |
| Type | Classic version: CAPTCHA New version: Behavioral analysis |
| Website | www.google.com/recaptcha |
How does reCAPTCHA pictures work?
reCaptcha gives the same image to a number of users, and if they all agree on what it says, then the picture becomes training data for Google’s AI. From wikipedia: The reCAPTCHA service supplies subscribing websites with images of words that optical character recognition (OCR) software has been unable to read.
When was reCAPTCHA invented?
2007
However, despite its efficacy, von Ahn noticed that while it only took several seconds to type the letters, hundreds of thousands of combined human hours were being wasted each day. He wanted to find a way to harness that collective effort, so he created reCAPTCHA in 2007.
Why was CAPTCHA invented?
Von Ahn created the cyber-security technology captcha to distinguish a human from a robot — and then gave it to Yahoo for free.
Why is it called reCAPTCHA?
The CAPTCHA was created at Carnegie Mellon University in 2000. The name is short for Completely Automated Public Turing test to tell Computers and Humans Apart. Von Ahn said there were now “probably hundreds” of different kinds of CAPTCHAs. He worked on one of the biggies, reCAPTCHA.
How much did Google acquire reCAPTCHA for?
In 2009, Google acquired reCAPTCHA for an undisclosed amount (von Ahn says the sum was somewhere between $10 million and $100 million) and put the program to work on a tremendous scale, digitizing material for Google Books and the New York Times archives.
Where does the name CAPTCHA come from?
The CAPTCHA was created at Carnegie Mellon University in 2000. The name is short for Completely Automated Public Turing test to tell Computers and Humans Apart. Websites need CAPTCHAs to guard against the “bots” of spammers and other computer underworld types.