how does captcha make money?

In this blog, we will look into the topic that is “how does captcha make money”, Alongside we will discuss how the formation of CAPTCHAS came into being as well as the types of CAPTCHAS there are and how CAPTCHAS make money.

how does captcha make money

Google makes money from CAPTCHA by selling the data they obtain from it. The people clicking n this CAPTCHA are not signed into their Gmail account, otherwise, they would no longer need to do these kinds of tasks. Hence, there is no way for them to refuse Google’s offer.

What is CAPTCHA?

CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. It is a test made to determine whether the being typing is a human or a robot.

The term was first coined by an individual named Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. The earliest version was invented in the year of 1997 by two units of individuals.

To complete this specific version of CAPTCHA, the individual must accurately assess and enter a sequence of letters or figures seen in a misleading image shown on their computer.

This user identification approach has been roundly criticized, primarily by those with disabilities, but also by others who think that twisted and difficult-to-read sentences make it more difficult to complete their regular jobs. For the typical person, it takes around 10 seconds to complete a standard CAPTCHA.

What are CAPTCHAs used for?

CAPTCHAs are used to prevent bots from gaining access to internet sites. The following are some examples of specific applications:

Maintaining the accuracy of Polls

CAPTCHAs, which ensure that each vote is entered by a real person, may help to avoid poll skewing. However, although this does not limit the overall number of votes that may be cast, it does extend the time it takes to cast each vote, preventing voters from casting multiple ballots.

Limitation of registration of services

Bots may flood registration systems and create bogus accounts, hence CAPTCHAs can be employed by services to prevent this from happening. It is better to limit account creation to prevent resources from being squandered and to reduce the likelihood of fraudulent activity.

Prevention of ticket inflation

CAPTCHAs may be used by services to prevent bots from flooding registration systems and creating fraudulent accounts. Restricting account creation protects a service’s resources from being wasted and lowers the potential for fraud.

Prevention of false comments

Using CAPTCHAs may help to prevent bots from spamming message boards, contact forms, and review sites, among other things. CAPTCHAs are used to prevent online abuse by forcing users to do an extra step. This inconvenience may assist to minimize online abuse.

History of CAPTCHA

The attempt to make text invisible to computers has been ongoing since the advent of the World Wide Web in 1989. It was hackers who were the first to do so, submitting sensitive material to Internet forums that they believed were being automatically reviewed based on keywords. They substituted a term with characters that were similar to the original word to get through such filters. |-|3|_|_() or)-(3££0 are two examples of HELLO that may take on a multitude of different forms, and a filter would be unable to distinguish between them. As a result, the name “Leetspeak” was coined to describe what was being spoken.

Gausebeck–Levchin was one of the earliest commercial implementations of CAPTCHAs, having appeared in the year 2000. When first launched in 2000, it used a CAPTCHA to safeguard its registration page, intending to file for a patent on this purportedly unique technology. As part of a fraud-prevention plan, PayPal implemented similar tests in 2001, asking users to “retype modified phrases that computers have difficulties identifying.” PayPal’s founder and chief technical officer, Max Levchin, played a critical role in commercializing this early application.

In 2009, Google purchased reCAPTCHA, a well-known use of CAPTCHA technology that had been developed by a third party. reCAPTCHA and CAPTCHA technologies were first used by Google in 2011 to digitize the archives of The New York Times and books from Google Books, as well as to safeguard its users from bot fraud.

Characteristics of CAPTCHA

CAPTCHAs are, by definition, completely automated, requiring little maintenance and little support to manage, resulting in significant cost and reliability savings.

Though the algorithm used to generate the CAPTCHA may be protected by a patent, it is required to be made public. Rather than just discovering the (secret) technique, which may be obtained by decoding or other means, this is done to demonstrate that breaking it needs the solution of a difficult problem in artificial intelligence (AI).

The characteristics include the following:

Invariant recognition is the ability to recognize letters that have a significant amount of variation in their shapes and sizes. The human brain is capable of distinguishing between an immense number of various versions of each character with high accuracy. When it comes to computers, this is not true, which makes teaching them to recognize all of those varied forms a challenging task.

A challenge with CAPTCHAs is that the letters are jammed together with no white space in between, making segmentation, or the ability to discern one character from another, difficult.

The importance of context cannot be overstated. The CAPTCHA must be grasped as a whole to properly recognize each of the characters. In one portion of a CAPTCHA, for example, a letter that looks like an “m” may be shown. It is only when the whole word is analyzed that it becomes clear that the letters are an u and a n.

Examples of CAPTCHA

CAPTCHAS mainly fall under three primary categories and these include

·       The text-based CAPTCHAS

·       The image-based CAPTCHAS

·       The Audio Based CAPTCHAS

Let us discuss each of it down below for a better understanding

The text-based CAPTCHAS

CAPTCHAs (Completely Automated Public Turing Tests) were the first way of human verification. When creating CAPTCHAs, it is permissible to include several words or phrases, as well as random numbers and characters. Some text-based CAPTCHAs may include capitalization adjustments as an added function.

The CAPTCHA depicts these characters in an alienating and mysterious way, necessitating the need of a third party to understand them. Characters are alienated in a variety of ways, including by scaling, rotation, and distortion. It is also possible to employ overlapping characters with visual characteristics such as color and background. This distancing protects users against bots with poor text recognition algorithms, but it may be difficult to read for humans because of the language barrier.


CAPTCHAs that need text input have been phased out in favor of image-based CAPTCHAs. This kind of CAPTCHA makes use of graphical components that are readily recognized, such as animal pictures, geometric forms, and scenic backdrops. Image-based CAPTCHAs often require users to choose photographs that correspond to a topic or identify photos that do not.

An example of this kind of CAPTCHA may be seen at the bottom of this page. In this case, the issue is defined by a picture rather than by words, which is noteworthy.

Humans are frequently more successful at decoding image-based CAPTCHAs than they are at understanding text-based CAPTCHAs. These technologies, on the other hand, raise serious issues about accessibility for visually impaired users and should be avoided. CAPTCHAs based on images are more difficult for bots to understand than CAPTCHAs based on text since they need both picture recognition and semantic classification, making them more complex to decipher.


As a result, audio CAPTCHAs were developed to enable persons who are visually impaired to take part in the game. They are typically used in combination with CAPTCHAs that are based on text or pictures.

In these CAPTCHAs, bots are unable to distinguish meaningful words from background noise because of the background noise. These tactics, such as text-based CAPTCHAs, may be difficult to understand, both for humans and for robots.

Math problems used in CAPTCHA

Some CAPTCHA systems demand users to solve a simple arithmetic problem, such as “8+9” and “13-8,” before they may proceed. In this case, the assumption is that a robot will have difficulty detecting the question and forming an appropriate response. For example, a word issue may demand the user to enter the apostrophe that is missing from a sentence or to complete a sequence of numerous linked words that have been given to them. These kinds of flaws are easily accessible to those who are visually challenged, but they may also be simple for hostile bots to exploit as well.

Social Media Sign In

Google or LinkedIn is a popular alternative to CAPTCHA. The individual’s information will be filled in utilizing the social networking website’s single sign-on (SSO) feature.

Although this is still inconvenient, it may be simpler for the respondent to find than other types of CAPTCHAS. It also has the advantage of being a simple registration system.

The introduction of ReCAPTCHA

This kind of CAPTCHA, which was popularized by Google, is substantially easier for customers to use than the majority of other CAPTCHAS. It shows users a checkbox labeled “I am not a robot,” from which the online users must choose – and that’s the extent of its functionality. To function, it must monitor user movements and determine whether a click or other user action on the website corresponds to human activity or to that of a bot. However, if the test fails, reCAPTCHA will show the user a standard picture variety CAPTCHA instead, but in some cases, the checkbox test will be sufficient to authenticate the user.

In this blog, we answered the question “how does captcha make money”, In which we discovered that Google earns money from CAPTCHA by selling the data they obtain from it. The people clicking on this CAPTCHA are not signed into their Gmail account, otherwise, they would no longer need to do these kinds of tasks. Hence, there is no way for them to refuse Google’s offer.

Frequently asked Questions (FAQ): how does captcha make money

How does captcha entry make money?

How does captcha entry make money? You may earn between Rs. 8000 and Rs. 16000 per day if you work 4 to 6 hours per day and answer a large number of captchas. Payment is made via PayPal, Perfect Money, or Web Money on captcha entry work sites.

Do people make money from captchas?

Is it possible to generate money using a captcha? You may earn anywhere from $0.25 to $0.60 for every 1,000 captchas you solve with the standard, basic captchas.

Which is the best captcha to earn money?

Which is the best captcha to earn money? 2Captcha is one of the top captcha entry job sites. If you have some spare time. As well as ProTypers might be your second job.

How much does reCAPTCHA make?

How much does reCAPTCHA make? We may place a price figure on the security provided by a reCAPTCHA using pricing data: $0.001 or less per answer. For reCAPTCHA Enterprise, Google charges $1 per 1000 requests, suggesting they now charge more per request than it costs to violate their service’s security.

Is captcha job APP real or fake?

Is captcha job APP real or fake? It’s quite unlikely that the Captcha Job pays. Perhaps they reward a few users only to demonstrate that their software is legitimate.

How do I withdraw money from 2captcha?

How do I withdraw money from 2captcha? To withdraw your funds, you must complete the “refund” form. I filled out the return form but got no money. Sometimes the request is not automatically processed. There is no need to contact us; the request will be fulfilled within two business days.


CAPTCHA. (2021, July 23). Retrieved from