How to transfer access_token from one application to another vk application?

Question

PHP

How to transfer access_token from one application to another vk application? And continue working without re-authorization.

Answer 1

No way - access_token is issued for a specific application. For example: Let's
take two conditional applications: A and B. You want to transfer access_token from application A to application B. But, because any access_token matches only the application specified in the client field during authorization, all requests from application B will still go on behalf of application A.