The National Information Infrastructure (NIl) that will evolve in the 1990's and beyond will impact many institutions of life. These include the way we learn and do science, self-caring, access to civil/information infrastructure systems & services, and management & control of manufacturing processes. The future scenario for the NIl assumes wireless networks used by walkstations realizing the dream of truly ubiquitous access to the information superhighway. Some of the current obstacles in building such a ubiquitous access system on mobile high-performance platforms include the user interface for these walkstations, the ability of sniffing information across heterogeneous geographically distributed information systems, the abil...