Very local networks

DANs = Desk Area Networks

The computer/printer/telephone/... will all be part of a very local area network on your desk.

wireless links No longer will you have to plug your printer into your computer (PDA/...) into your computer
active badges No longer will you have to sign in/out of areas, write down peoples names at meetings, ... the system can provide this data based on the active badges

Olivetti and Xerox are exploring "Teleporting" your windows environment to the workstation nearest you, on command, if there are multiple choices probe each one (currently a "beep" is emitted to tell the user which).

BANs = Body Area Networks

Users will be carrying multiple devices which wish to communicate:

thus there will be a need for a network between these devices which you carry around; and
personal devices will wish to interact with fixed devices (such as Bankomat machines, vehicle control systems, diagnostic consoles (for a "mechanic" or repairman), ...) and other peripherals.

Note that this might mean that future vehicles will have no need for dashboards - since the user's network will talk to the vehicle's network - and the user carries their own information interfaces with them [thus users can always use their favorite language; with conversion to vehicle Autospeak/EDI/... as needed]