Выберите страницы для экспорта:
Where to store tokens in a xamarin.form applicationhttps://stackoverflow.com/questions/46004200/where-to-store-tokens-in-a-xamarin-form-application
https://github.com/sameerkapps/SecureStoragehttps://www.nuget.org/packages/sameerIOTApps.Plugin.SecureStorage/