Welcome to the practical guide to decoding CAPTCHA's. Everything you need to start decoding CAPTCHA's is contained within. Although there is a heavy emphasis on decoding you can consider it a general guide to CAPTCHA's in general. Although mostly focussed on algorithmic methods of decoding CAPTCHA's this will also briefly cover paid/human services, history and anecdotes.
With this purchase you get the 16,000 word copy copy of the book in PDF, Mobi and Epub formats and lifetime updates whenever a new version is published.
You'll need an account to access this in our app. Please create a password to continue.
Download from the App Store or text yourself a link to the app
Good news! Since you already have a Gumroad account, it's also been added to your library.Tweet Share