What does the graphic verification code look like?

Icbc commemorative coin reservation graphic verification code has three forms. You can enter the verification code according to the following different situations.

1, graphic verification, will give a graphic, and then give four choices, all choices will have letters or numbers, in front of the text, enter letters or words.

2. One is to drag the picture like the original picture, and the other is to manually type the corresponding number.

3. One is to click on the text of the picture to select the corresponding text, and the other is to select the similar picture above for graphics.

Why use graphic code to verify?

As we all know, the main function of graphic verification code is to distinguish whether the registration behavior is man-made or robot-made. For example, before registering a Taobao account or buying a train ticket to submit an order, you often have to pass graphic verification to get the SMS verification code. The main purpose of joining this step is to prevent network hackers or criminals from using bombing software to maliciously attack, get the SMS verification code out of control, waste the cost of enterprises, and produce bad data that are not artificially registered. The addition of picture verification code makes SMS verification code more secure.

Prevent malicious password cracking, ticket brushing, forum flooding and page brushing.

Effectively prevent hackers from constantly trying to use specific programs to log in to specific registered users for violent cracking. In fact, using verification code is a popular way for many websites (such as China Merchants Bank's online personal banking and Baidu Community), and we have also realized this function in a relatively simple way. Although logging in is a bit troublesome, this function is necessary and important for the password security of netizens. However, we still remind you to protect your password, try to use a password with more than 6 digits, letters and symbols, and don't use a simple password such as 1234 or a password that is the same as or similar to your user name, so as to avoid unnecessary troubles caused by someone stealing your account.

The verification code usually consists of some lines and some irregular characters, and its main function is to prevent some hackers from stealing password data.

The verification code of most websites needs to click the fill-in box, and then the verification code picture will automatically pop up. Because the verification code is randomly generated, there is a great chance that there will be a picture of the verification code that cannot be clearly identified, so it should be noted that the general website will have corresponding prompts, such as "I can't see it clearly, change it". If there is no prompt, click the current verification code picture directly to complete the replacement of verification code.