How to disable user authorization if he is already logged in - JWT in Laravel 7?

Question

JSON Web Token

Hello! I really need help... The task is this: there is a project on Laravel 7 with JWT authorization. It is necessary to check before authorizing the user whether he is already in the system so that it is impossible to enter, for example, 2 people under the same login / password at the same time ... well, or from 2 browsers (devices) ... So that when trying to log in there is a message like: this user is already in the system... And of course, so that when logout or when the session time expires, it would be possible to re-login...
I would be very grateful!

Answer 1

Set a fairly short access token time, when logging in, check in the token table if there are live tokens for another browser. Browsers can be distinguished using cookies or etag.