Pairing with a phone is not necessarily a requirement for using Glass.

ENGADGET: Living with Google Glass, Day Two: Around the House

Google showed a series of videos of people using Glass in the real world (not jumping out of planes).

FORBES: The Project Glass Presentation at Google I/O Might Have Been Awesome, But The Product Doesn't Seem As Exciting Yet

Unfortunately, apparently due to privacy concerns, a post tonight by the Project Glass team says that it will not approve any app using the tech for release -- at least until it has some privacy protections in place.

ENGADGET