If you forgot your code, how to find your code as quickly as possible.

1）.Captcha is generally to prevent batch registration, and it looks difficult to the human eye, let alone a machine. Two like the post bar is not logged in to post to enter the verification code is probably to prevent the occurrence of large-scale anonymous replies At present, many ** in order to prevent users from using robots to automatically register, log in, and irrigate, all use verification code technology.

The so-called verification code is to generate a string of randomly generated numbers or symbols, add some interfering pixels (to prevent OCR), and the user will recognize the verification code information by the naked eye, enter the form to submit** verification, and only after the verification is successful can a certain function be used.

2）.Generally, the place where the user ID is registered and the major forums require a verification code.

3）.Common captchas.

1. Four-digit number, a random one-digit string, the most original verification code, the verification effect is almost zero. 2. CSDN** user login is in GIF format, which is currently commonly used as a random number ** verification code. **The characters on the ** are more decent, and the verification effect is better than the previous one.

For those who do not have basic graphic iconography knowledge, it is unbreakable! It's a pity that the program that reads it, on the first day that csdn used it, seems to have been published in the forum, which is really pitiful!

3,QQ**User login is in png format,**Random numbers + random capital English letters,The whole composition is a bit flamboyant,Every time you refresh it,Each character will change its position! Sometimes the ** that comes out can't be recognized by the human eye, it's amazing....4. When MS hotmail is applied, it is in bmp format, random number + random capital English letter + random interference pixel + random position.

5, Google's gmail registration is in jpg format, random English letters + random color + random position + random length. 6. Other major forums are in XBM format, and the content is random.

4) Significance: In order to prevent users from using robots to automatically register, log in, and irrigate, they have adopted captcha technology. The so-called verification code is to generate a string of randomly generated numbers or symbols, add some interfering pixels (to prevent OCR), and the user will recognize the verification code information by the naked eye, enter the form to submit** verification, and only after the verification is successful can a certain function be used.

Here's how to do my captcha:

1. First find the SMS in the mobile phone, such as the key mu function, and then click to open the SMS.

2. After opening the page, scroll down the page, find the verification code, and then click to open the verification code.

3. After opening the verification code page, you can see the verification code received in the mobile phone.

4. If you don't need it, press and hold the verification code information with your finger to delete the verification code information in the pop-up window. <>

Tools used: Computer, iPhone 8

How to know your own captcha:

1. Open the verification webpage and fill in your mobile phone number. (as shown in the image below).

2. Click to send the verification code, and then wait a few seconds, and your phone will receive the verification code SMS. (as shown in the image below).

3. Open the SMS on your mobile phone, and you can see the verification code. (as shown in the picture below)

SMS Verification Code Definition and Application:

SMS verification code is an effective verification code system by sending a verification code to a mobile phone. Whether it is large**especially shopping**, it provides a mobile phone SMS verification code function, which can ensure the safety of shopping more accurately and safely, and verify the correctness of users.

Some verification code access providers provide SMS verification code service, and each ** interface is modified to send a request to the access provider's server, and the server sends random numbers or rotten letters to the mobile phone, and the access provider's server does the verification of the verification code.

At present, the most commonly used are major banks, such as online banking, online banking, online **, ****, ticketing companies, etc. SMS verification code uses SMS verification code to register members, which greatly reduces the data of illegal registration and bad registration. <>

Make model: iphone12

System Version: Software: Info.

1. Turn on the mobile phone and click "Info" on the desktop of the mobile phone to disassemble it.

2. After entering the information, click on the "All information" item.

3. Now you can view all the verification codes on your mobile phone, and you can find the required verification code in it.

What the captcha does.

Prevent malicious cracking of passwords, ticket swiping, forum flooding, page swiping, effectively prevent a hacker from constantly logging in attempts to a specific registered user with a specific program brute force cracking, in fact, the use of verification code is now a lot of ** common way (such as China Merchants Bank's online personal banking, community), we use a relatively simple way to achieve this function.

Although it is a little troublesome to log in, this function is still necessary and important for the password security of netizens.

But we still remind everyone to protect their passwords, try to use more than 6 digits of passwords mixed with numbers, letters, symbols, etc., and do not use simple passwords such as 1234 or passwords that are the same or similar to the username, so as not to bring unnecessary trouble to yourself if you are stolen.

Captcha is usually rolled out with some lines and some irregular character groups, and the main function is to prevent some hackers from digitizing the password and stealing it.

Hello, I'm glad to answer for you, please later, I'm working hard to sort out the answer for you, and I'll reply to you within 5 minutes.

1.Restart the network If the network is delayed or the server communication is delayed, the verification code SMS may not be received. Please click Airplane mode in the drop-down menu and turn it off to re-trigger the network to send SMS.

A blacklist is set in Phone Manager's harassment blocker, please remove the number from the blacklist as needed and try it.

Please check whether you have set to block all strangers in Phone Manager's harassment blocker, and turn off this switch as needed before trying.

2) Please disable the verification code security protection function.

I forgot my SMS verification code and want to retrieve it.