It has been confirmed that Xbox One’s blu ray discs will be locked to a user account. The discs themselves will be used simply to install the game and will not be required for play after the game is installed on the game console. Games installed will be attached to that user account and will require a fee to be installed using a different user account. Specifics are still vague, but it’s safe to assume that all users on a given console with the game installed will have access to the game. It’s also uncertain if this means that lending games to friends is out, but it confirms that Microsoft is taking measures against used game sales with this feature. Sad as it may be, it’s been expected for some time and a direction the gaming industry has been moving toward for a while now.
The rumors regarding the online-always requirement are mostly unfounded as the system will be able to play games offline and the online requirement is left to the publisher. Reactions about this have been exaggerated as it’s understandable that several multiplayer games (such as MMOs and competitive shooters) require a connection anyway.
Source: The Verge