CAPTCHA..why to use it?

• The term CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart

• CAPTCHA is a program that protects websites against spammers by generating and grading tests that humans can pass but current computer programs cannot

•  In order to make the images resistant to OCR (Optical Character Recognition) the letters and numbers have been curved and compressed

• The process usually involves a computer asking a user to complete a simple test which the computer is able to grade. These tests are designed to be easy for a computer to generate, but difficult for a computer to solve, so that if a correct solution is received, it can be presumed to have been entered by a human

• It is a Software designed to translate handwritten images/text (usually captured by a scanner) into machine-editable text