reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows.
About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day. What if we could make positive use of this human effort? reCAPTCHA does exactly that by channeling the effort spent solving CAPTCHAs online into "reading" books.
To archive human knowledge and to make information more accessible to the world, multiple projects are currently digitizing physical books that were written before the computer age. The book pages are being photographically scanned, and then transformed into text using "Optical Character Recognition" (OCR). The transformation into text is useful because scanning a book produces images, which are difficult to store on small devices, expensive to download, and cannot be searched. The problem is that OCR is not perfect.
About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day. What if we could make positive use of this human effort? reCAPTCHA does exactly that by channeling the effort spent solving CAPTCHAs online into "reading" books.
To archive human knowledge and to make information more accessible to the world, multiple projects are currently digitizing physical books that were written before the computer age. The book pages are being photographically scanned, and then transformed into text using "Optical Character Recognition" (OCR). The transformation into text is useful because scanning a book produces images, which are difficult to store on small devices, expensive to download, and cannot be searched. The problem is that OCR is not perfect.
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reCAPTCHA
Summary and Relevance
Our users have written 7 comments and reviews about reCAPTCHA, and it has gotten 127 likes
- Developed by Google
- Proprietary and Free product.
- Average rating of 1.3
- 14 alternatives listed
Popular alternatives
View allreCAPTCHA was added to AlternativeTo by Sedoe on Apr 28, 2011 and this page was last updated Jul 11, 2019.
Recent user activities on reCAPTCHA
- wimtomo added reCAPTCHA as alternative(s) to Friendly Captcha4 months ago
- honyczek added reCAPTCHA as alternative(s) to Arkose Labs6 months ago
Maybe the most popular, but far from being the better tho.
And the worse for a CAPTCHA :
there are also some darkweb services to bypass it which I now pay for on some sites I use more often.
Reply written almost 2 years ago
A horrible and privacy intrusive solution blocking common users and making users work for Google.
An example of technical monopoly where there are very few other viable and privacy friendly solutions.
since trump administration cancelled protection of users from ISP which allows all ISP to harvest surfing behavior of clients [to sell] it is foolish to use internets without VPN. I use VPN services from companies well rated by Torrent Freak. I am not a pirate or a spammer. I am also not politically correct because I will not comply with intellectual tyranny either.
I would no more disable VPN than I would adblock whitelist a site using third party ads
#deleteGoogle #privacyraping
for everything else there's F'google
http://uncaptcha.cs.umd.edu/
[Edited by breakup_google, June 28]
[Edited by breakup_google, June 30]
The only intention why this is so popular is to train G00gle' algorithms. I wish websites would stop using this sh*t and start looking for alternatives!
I have bad memories of having to go through 50 picture selections in a row before finally giving up. And, yes, this thing is just a crowdsourcing method to help Google's bots recognize objects in images.
When it works, it works well with just a click of the box. When it doesn't... you're going to have a bad time trying to decide whether a box has a fire hydrant in it or not.
I ihhgly suspect their image captcha to be a hidden tool for their bots to better analyze pictures and identify specific objects on photos... and i don't like it...
Other than that, being able to pass the captcha with a single click (most of the time) is quite a big advantage.
Soon, reCAPTCHA's CAPTCHAs will be so hard to read, only robots can solve them... ;-)