Gamers simply need sign in and begin downloading a game. Once enough data has been acquired on the Xbox One’s hard drive, gaming will be accessible.
That said, Xbox One gamers will still have to have the disc in the One’s tray in order to play “non-digital” games, though Xbox did say gamers will be able to jump into a game as soon as the copying process begins.
If you recall, Microsoft now requires that you install a game on the next-gen gaming console’s hard drive in order to play the game. This of course was not the case when Microsoft first announced the Xbox One. But after backlash from devoted fans, the Redmond based company amended the gaming console’s DRM requirements.
Of note, the PS4 will allow gamers to access their entire digital library from any where, be it a friend’s PS4 or yours.