How to stay logged in vk api?

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Hello, I ran into a problem with authorization of desktop applications vk api.
I can't figure out how to keep the user logged in to the application, like in the Meredian player program. I thought that it stores the password, it turned out not to be so (in the log window it says that Meredian does not store passwords). And even if you store the password, it is not clear how to carry out such authorization without user participation. How to make a request (I did not find it in the help). Thanks in advance to everyone who helps.

Answer 1

solution found skope=offline =)