Most likely, on a website, when you want to register or are going to leave a comment, you come across a Captcha or reCaptcha. The differences between them are real, although many users do not really know them. Next we are going to talk about these terms in a more concrete way, so that we can know what they are, in addition to the differences that we find between them. Since they have evolved over time.
Yes we can say that a reCaptcha is the evolution of Captcha, which is the original test that sought to separate people from spambot many years ago, at the beginning of the 2000s. First, we will tell you about each of them and then we will tell you more about their differences.
What is a Captcha
We start with this term. Captcha is short for Completely Automated Public Turing test to tell Computers and Humans Apart. It is a test that looks for differences in computer people. It is the basic purpose of it, so it can be said that we are facing an inverse Turing test. Because in this case it is humans who have to prove that they are really human and that they are not machines.
The reason why humans have to differentiate ourselves from machines on the Internet, which seems strange to many, is simple. Wanted prevent bots or automatisms from interacting with web pages. In this way, they ensure that behind every action, there is always a human being.
Captcha emerged in the year 2000, after a great spam chaos in the late 90s. In this case, a system was designed with which to control all that automatic advertising. Users were forced to register in forums and emails. So they had to prove that they were people and it was not a program or spam.
In this way Captcha was born. In its beginnings, it was a test in which we had to recognize some letters or numbers that were difficult to read for a few seconds. A simple process for humans, not for bots. Although, it also had some problems. Since he was asking humans for an effort, just to show that they are human. For this reason, reCaptcha was born as an answer.
What is reCaptcha
The reCaptcha is then an evolution of the aforementioned Captach from the beginning. It is a system that seeks to be more productive. Since 2009, this system has been in the hands of Google, who bought it to help them digitize their books on Google Books. But, they have made it evolve, with new uses.
Since reCaptcha currently allows verify that you are a human by pressing only one button. Codes are avoided in this way. Something that Google has achieved through a series of algorithms and examining unwritten clues for each user. With these parameters, the algorithm will check the behavior of the user. Which will allow you to check that you navigate like a human.
In addition, records mouse movement until the button is clicked identification. So they make sure at all times that you want a person, to prevent a bot from passing this test. In short, a remarkable evolution with respect to Captcha.
Differences between Captcha and reCaptcha
In day to day, both types are basically called Captcha. It is the same term, because the original was the first to be used for this technology. The new version is simply an evolution, so it is not uncommon for the same name to be used in all cases. Although the reality is that there are several different types.
So when you listen to Captcha, they are probably referring to one of the different versions what's up. Although if it says specifically reCaptcha, then it refers to the technology that Google develops and uses. The latter is a technology that advances, and in fact there is already a new version that will be implemented soon.