CAPTCHA Checks won’t irritate any longer


One of the most annoying things every online user has to face is the constant requirement of filling annoying CAPTCHAs to prove his humanity in order to access the site. Bots and scripts have seriously damaged the online reputation of websites and CAPTCHAs are an attempt to prevent malicious attacks and misrepresentation of information on online sites. As unique as this technique may seem to you, it is actually very annoying and time-consuming.


What is a CAPTCHA?

A CAPTCHA, also known as Completely Automated Public Turing test to tell Computers and Humans Apart, is actually a computer program which is designed to help servers distinguish human users from scripts and bots. These CAPTCHAs are actually used to prevent spamming and data theft from websites.


What attempts have been made to eliminate it?


Researchers at the University of Alabama in Birmingham came up with a solution to annoying and tiresome CAPTCHAs by introducing Dynamic Cognitive Game, DCG. This technique is highly interactive and fun as it is based on challenging the users to solve some simple games. Instead of testing user’s patience in terms of identifying blurred scribbling or distorted images, DCG requires the users to play some fun games in order to prove their humanity.


Puzzles and Audio messages:

Guatmalan Luis Von Ahn devised the tedious method of numerical and alphabetical verification for the sake of verifying human users. However, several alternatives have been found to this technology since 2000. Now, most of the CAPTCHAs revolve around solving a simple puzzle, dragging and dropping of objects, completing simple match puzzles, or deciphering a voice message in distorted voice for user verification.

Google’s new reCAPTCHA v3:

Google has switched to a new reCAPTCHA v3 to realize its goal of visitor testing frictionless. The quality of this test is that it is completely invisible to the visitors. Google acquired v4 from Carnegie Mellon almost 10 years ago. This company’s motto was to eliminate the annoyance of clicking images, checking boxes and deciphering scribbling for visitor verification processes.


Background testing:

Google has switched to on-screen visitor testing to a background testing mechanism with the new reCAPTCHA v3. This technique is so frictionless in its efficiency that you will not feel the slightest hint of your humanity being verified. Everything will silently take place in the background. The only parties aware of this verification will include your visiting server and Google’s reCAPTCHA server.

Now the question is, How does Google verify your humanity silently in the background exactly?

Adaptive Risk Analysis:

Google has switched to the v3 reCAPTCHA because of its effectiveness. Instead of asking the users to fill ReCaptcha on one page only, they are required to fill it on several pages as added by webmasters. If you manage to keep a streak of reliable reCAPTCHA submissions, Google tracks this behavior and recognizes it as a secure visitor’s behavior. On the other hand, if several attempts are being made on reCAPTCHAS of several pages, this behavior indicates suspicion. This means the lower rest scores will alert the system regarding potential breaches whereas, the high test scores will eliminate the need of filling reCAPTCHAs over and over again as Google will mark you as an ordinary user. This technique is being hailed as Adaptive Risk Analysis as it allows Google to track visitor’s behavior and lets the sites make decisions regarding what happens with test scores.

No more website abusing:

Bot attacks and website abuses will be significantly reduced after the use of reCAPTCHA v3. This system is designed to make it a whole lot of difficult for bots and scripts to befool websites. Therefore, the bots which have previously been successful in deceiving a reCAPTCHA on one page cannot possibly deceive all the CAPTCHAs distributed on different website pages. This will result in a significant reduction in comment spamming- which is a good news for all those who are in favor of fair use of information.



Although several attempts have been made to eliminate the annoyance brought by CAPTCHAs, we cannot expect their immediate removal from our systems. CATPCHAs might prevail in the online world for a longer than expected duration, which is hugely in our own favor.


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