Pass user authentication to mobile webview

We’d like to build native mobile apps for iOS and Android which have user authentication already built in, and show shopify via mobile webviews. Is it possible to pass authentication info to a webview, in both Android and iOS?
Would it be possible to use the shopify API to get an access token for the user and then use that access token as part of the url in the webview? Or can you recommend another way to authenticate a user, or an SDK which we could use in this scenario?

Did you find any solution by chance?

Have you found any solution to this?

No, I don’t think there is a solution, although I did not research it further because we have postponed this particular project which would have needed it.