Hari Thapliyaal

Dr. Hari Thapliyal is a seasoned professional and prolific blogger with a multifaceted background that spans the realms of Data Science, Project Management, and Advait-Vedanta Philosophy. Holding a Doctorate in AI/NLP from SSBM (Geneva, Switzerland), Hari has earned Master’s degrees in Computers, Business Management, Data Science, and Economics, reflecting his dedication to continuous learning and a diverse skill set. With over three decades of experience in management and leadership, Hari has proven expertise in training, consulting, and coaching within the technology sector. His extensive 16+ years in all phases of software product development are complemented by a decade-long focus on course design, training, coaching, and consulting in Project Management. In the dynamic field of Data Science, Hari stands out with more than three years of hands-on experience in software development, training course development, training, and mentoring professionals. His areas of specialization include Data Science, AI, Computer Vision, NLP, complex machine learning algorithms, statistical modeling, pattern identification, and extraction of valuable insights. Hari’s professional journey showcases his diverse experience in planning and executing multiple types of projects. He excels in driving stakeholders to identify and resolve business problems, consistently delivering excellent results. Beyond the professional sphere, Hari finds solace in long meditation, often seeking secluded places or immersing himself in the embrace of nature.

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What is CAPTCHA?

What is CAPTCHA?

CAPTCHA stands for “Completely Automated Public Turing test to tell Computers and Humans Apart.” It is a security mechanism used by websites to determine whether the user is a human or a computer program (bot). CAPTCHAs are typically implemented as tests or challenges presented to the user, which are easy for humans to solve but difficult for bots.

The purpose of CAPTCHA is to prevent automated bots from performing actions that are intended for human users, such as creating accounts, submitting forms, or accessing restricted content. By requiring users to complete a CAPTCHA, websites can verify their humanity and protect against spam, brute-force attacks, data scraping, and other malicious activities.

CAPTCHAs can take various forms, such as

  • Distorted images of alphanumeric characters,
  • Math problems,
  • Logical puzzles,
  • Audio challenges: What is said,
  • Audio challenges: What is not said,
  • Audio challenges: whose voice is that.
  • Audio challenges: Is it bird, child or animal voice.
  • Identify image spoken
  • Image Challenge: Identify image for which text is typed in disorted form
  • Image Challenge: Locate an object in an image
  • Simple checkboxes.

The idea is to create a task that is easy for humans to interpret and complete, but challenging for bots to understand and solve accurately.

In recent years, CAPTCHAs have become more sophisticated with the use of advanced algorithms and machine learning techniques. This has led to the development of more secure and user-friendly CAPTCHA mechanisms that are difficult for bots to bypass while maintaining a better user experience for human users.

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