How long is the validation code valid? How many times can I use it?

The reason why the SMS verification code is set to be valid for 60 seconds is actually for the safety of users and to prevent malicious repeated access to verification codes from affecting enterprise operations. At the same time, SMS verification code is also a necessary operation and maintenance means to increase the security index. If the user has not received the verification code information or the time has passed, he can apply for verification code acquisition again.

Extended 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.

The received verification code is usually used for user registration and password modification. If you keep entering the verification code incorrectly, the verification code will be wrong or invalid, and if you get the verification code again, it is likely to be mistaken by the system as an attack and invalid.