What is the use of tablet verification code?

The functions of the tablet verification code are as follows:

The role of verification code:

1, in order to prevent the machine from impersonating human beings to do violent cracking;

2. Prevent large-scale online registration from abusing services;

3. Prevent the abuse of online batch operation;

4. Prevent automatic publishing;

5. Prevent information from being collected and summarized in large quantities;

5. There is another misunderstanding. You may think that the verification code is only in the form of a picture of a person. In fact, voice dictation, formula calculation, common sense question and answer, situational question and answer, etc. can all become verification codes.

All these verification codes have one thing in common: humans can easily give correct answers, but computer programs can't.