Need an extended answer or a link to the material:
1) Can I use one access_token for many users? To make one authorization under my account to receive in return a secret key (token) with which I will have access to the API and add it to each request, instead of forcing each user to do authorization. (An important point: I do not need personal information of the user, his photo, etc., etc., but only permission to use the private API. But I can only get this access from my account and continue to add it to each request for different users).
2) If this is not possible then explain how can I save these tokens to the database? How do I associate a user with a token? After all, in fact I don’t have his name, email or usernames, but only a token. How can I find out that this is exactly this user when he decides to log in next time in 10 days?