article_snippet: Sources have revealed that developers from firms such as Facebook and BMW have been invited to a secret lab that’s completely shut off from the world to fine-tune their apps – but can’t even take pens and paper into the room.
article_snippet: The likes of Facebook and BMW apps in secretive labs in which pens, paper and anything else from the outside world is banned .
article_snippet: Internet access is blocked inside the room, the developers have to bring source code for the developers apps on a drive that can’t leave the complex, and the developers can’t discuss the plans with anyone.
highlights_snippet: Pens, paper and anything else from the outside world are banned .
  
highlights_snippet: Rooms are blocked from the web entirely and app source code has to be handed over to Apple on drives that can’t leave the complex .
  