However, with the help of Artificial Intelligence, algorithms are getting smarter and bots are now capable of cracking these tests. Generally, computers and computer programs such as bots are not capable of interpreting a CAPTCHA as they generate distorted images with text or numbers, which most Optical Character Recognition (OCR) technologies fail to make sense of. These skills enable humans to read a distorted text image or choose specific images from several different images. The concept of CAPTCHA depends on human sensory and cognitive skills. This has caused a heightened adoption of CAPTCHAs across various online businesses and services. In essence, a CAPTCHA test can tell machines/ computers and humans apart.
As a type of Human Interaction Proof, or a human authentication mechanism, CAPTCHA generates challenges to identify users. Completely Automated Public Turing test, to tell Computers and Humans apart, popularly known as CAPTCHA, is a challenge-response test created to selectively restrict access to computer systems. Internet service providers generally face the risk of authentication-related attacks, spam, Denial-of-Service attacks, and data mining bots.
