How can I perform verification when a user logs on to another computer?

How can I perform verification when a user logs on to another computer? I would like to ask you how to implement this function?

Log on to the background as administrator 1 and verify the verification code. after successful login, the system saves the cookie and does not need to verify the next login. If Administrator 1 changes the computer, verification is also required, in the same browser, the administrator does not need to verify when logging on multiple times, but it has to be verified again in a different browser, which makes it more troublesome. Can the same computer be used, after the administrator logs in, no verification is required to open the browser. verification is performed only when the computer is changed.

Reply to discussion (solution)

This is not acceptable.
Does one administrator use a computer for various browsers?

Different browsers have their own cookies.

The cookies generated by different browsers are independent. how can they be shared? even if the cookie folder is shared, the generated cookies are still different.

Thank you for your enthusiastic answers.

What is the principle of this implementation?

The cookies generated by different browsers are independent. how can they be shared? even if the cookie folder is shared, the generated cookies are still different.

Wait, share the cookie folder with your browser,

What is the principle of this implementation?

It may be compared whether the IP address that was last logged on and the IP address that is currently logged on are in the same city/province

The cookies generated by different browsers are independent. how can they be shared? even if the cookie folder is shared, the generated cookies are still different.

Wait, share the cookie folder with your browser,

What is the principle of this implementation?

It may be compared whether the IP address that was last logged on and the IP address that is currently logged on are in the same city/province

Thank you for your answer.