title: temporarily store data in electron js localStorage
body: <p>i am trying to play a video file in my electron app for the user. but i need the file can't be accessed by user, i searched a bit, tried some codes and found that some guys say things like electron js localstorage are easy to hack and can be accessed by users...
  so here are the questions:</p>
  
  <p>1.how can i store a video file locally that can only be played and accessed by electron JS app?</p>
  
  <ol start="2">
  <li>is it safe to do this with electron? because i need my app to be cross platform?</li>
  </ol>