we're developing an app which contains confidential data. On returning from background the user must always enter a passcode. But in the switcher screen an app thumbnail is visible and all the app page content is readable. Is it possible to set the thumbnail opacity, blur it or replace with a static image (e.g. company logo) to protect the sensitive data? I tried those things on Application.MainPage in OnSleep method but apparently it is too late and the thumbnail (screenshot) is already taken. Is there any other method?