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Prize: One book of choice by Packt
|CAPTCHA validation is being used everywhere on the Internet to make it difficult for robots to access sites that should be accessed only by real human user beings.
One of the problems is that most solutions are based on images. Obviously, such images cannot be read by blind users using regular text to speech conversion programs.
This class provides a CAPTCHA alternative that is not based on images, but rather on simple math operations.
This way, blind users can read what is written in the pages and pass the CAPTCHA validation tests giving the correct results to requested operations.
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