In contemporary life, every user has more or less accounts, and there are always a few nasty pop-up windows when you log in, especially verification codes. At least during the Spring Festival, many friends should look at the complex verification code and see that they are going crazy …
\nWhat is the significance of the verification code? What will the verification code look like in the future?
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\nWhy do I need a verification code?
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\nBefore explaining the verification code, we must first introduce a great bull who is beyond the age-British computer scientist Alan Mathison Turing, Alan Turing, he also has a more well-known title “the father of artificial intelligence”.
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\nFor his story, you can check out the movie “Imitation Game”, starring Benedict.
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\nAs early as 1950, Turing proposed the possibility of a “future computer” in a paper. He believed that the computer of the future would have “intelligence”. In view of the fact that intelligence is difficult to distinguish, Turing proposed An epoch-making verification method:
\nA machine is said to be intelligent if it can talk to humans (via telex equipment) and cannot be identified as a machine.
\nThis is also called the “Turing test” by future generations, and it is also the main idea of \u200b\u200bdistinguishing humans from robots.
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\nThe full name of the verification code is the Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA). It was developed by Louis Von Ann of Carnegie Mellon University in 2002. put forward.
\nWe all know that whether a website or an app is built on a server, and the capacity and bandwidth of the server are limited, if a large amount of non-human traffic flows into the server, it will cause the server to overload and affect the use of normal users. These non-human traffic include both mechanically working robots and crawlers that crawl page information.
\nJust like buying train tickets during the Spring Festival this time, in addition to many of the fellow travellers who are as loyal to you as you are, there are also ticket grabbing robots, oxen with ticket grabbing scripts and major travel apps. The ability to grab tickets for the latter few is much stronger than a single ticket purchaser …
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\nTherefore, developers must ensure the normal use of normal users, and this must first distinguish between humans and robots, the role of the verification code is this.
\nIn addition, the verification code can also play the role of “confirmation”. It is determined by the one-to-one verification code that the secret operation is performed by myself.
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\n02
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\nVerification code is not once and for all
\nLike many technologies, verification codes have continued to evolve, from the earliest four digits + text, to later types of English, numeric operations, Chinese character recognition, picture recognition, simple semantic analysis, common sense questions and answers.
\nEnglish + numbers
\nPicture content recognition
\nQ & A
\nEven harder are the verification code for voice calls, SMS verification codes, etc. It can be said that the difficulty of cracking is one step at a time.
\nsending text verify code
\n…
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\nBehind these complex captchas, there is a continuous improvement of captcha cracking methods: from the earliest brute force cracking, OCR text recognition, collision recognition, to the most advanced Tensorflow deep learning recognition captchas, both parties are here. China constantly upgrades its combat effectiveness to achieve a spiral rise.
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\nIn fact, compared with the continuously upgrading verification codes, the verification code cracking technology has not made much progress in recent years. This is mainly because there are not many methods available to increasingly complex verification code crackers.
\nAfter getting a piece of verification code, the algorithm first needs to automatically extract the text in the verification code, and then to reduce the influence of the “noise element” in the verification code on the recognition algorithm, and then to split a single text element to extract the verification code. And in the case of different fonts and interference noise, recognition accuracy and time constraints, it is difficult to develop a universal cracking algorithm.
\nBut for traditional verification codes, the crackers still have a final trick-human coding, there are many coding platforms on the Internet, and someone will come over to code manually after posting a task, which is equivalent to using humans to cheat. The method passed the Turing test.
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\nHowever, you must pay attention that such coding part-time platforms are basically fake. It is troublesome to pay the labor by coding, and it is troublesome to withdraw cash. In addition, some platforms will charge dirty money such as “handling fees” first. Everyone Do n\u2019t be fooled, I \u2019ve suffered from beatings from the society when I was in college, and I lost hundreds of dollars.<\/p>\n
03
\nNew technology at the push of a button
\nAlthough the complex verification code does not need to worry about the attack of the cracking algorithm, it is a kind of torture for normal human users. Here I personally “commend” Samsung Cloud’s verification code, which can cancel my use power.
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\nTherefore, in the mobile era, verification codes that reduce input and mainly rely on interactive operations such as clicking and swiping have become the verification codes that best meet user habits. At present, the slider-type verification code and the picture element recognition-type verification code are the main verification codes of major websites.
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\nHowever, the best verification code service currently available is from noCAPTCHA launched by Google in 2014. The literal translation is “verification code without verification code”. It has been used for quite some time now. It will pop up, users just need to click the white square in front of “I’m not a robot” to complete the verification. The whole process takes only a few seconds, and no authentication is required to complete the verification.
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\nBehind the simpler, Google \u2019s risk analysis engine is at work. This engine analyzes whether the user is a real person before, during, and after clicking on the verification code. This engine uploads the user \u2019s IP, country, and click time. , Mouse trajectory, web page scrolling records and other user usage conditions to the server, and then analyze whether the user’s real identity is human or robot.
\nAt present, there are some imitators in this technology.
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\nAlthough the verification code was born less than ten years ago, it has become one of the most important guardians of the network world. For users, verification codes are somewhat annoying, but with the continuous advancement of technology, verification codes are also becoming insensitive. Compared to buying train tickets with ticket-grabbing software, everyone seems to be “fair competition” under the same verification code.<\/p>\n
By Receive sms online<\/a>.<\/p>\n If you need to use Receive sms free<\/a> verification service, please visit https:\/\/receive-sms-free.cc\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" In contemporary life, every user has more or less accounts, and there are always a few nasty pop-up windows when you log in, especially verification codes. At least during the Spring Festival, many friends should look at the complex verification code and see that they are going crazy … What is the significance of the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/posts\/50","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/comments?post=50"}],"version-history":[{"count":1,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/posts\/50\/revisions"}],"predecessor-version":[{"id":51,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/posts\/50\/revisions\/51"}],"wp:attachment":[{"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/media?parent=50"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/categories?post=50"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/receive-sms-free.cc\/blog\/wp-json\/wp\/v2\/tags?post=50"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}