What Exactly does “Mobile” mean?
		– user mobility vs. computer mobility n user mobility: always work in same computing environment, problem is how to “teleport” environment to location of user n computer mobility: computing environment moves with user, utilizes wireless links, has to deal with changing environments – scales of mobility: n within house/building n campus/town/city n state or region n country or continent n world – we will look at potentially world-wide computer mobility