Today in our everyday life we are surrounded by devices that are
capable of some form of digital processing, computing or
communication. The PDA in the pocket, the notebook in the
briefcase or on the desk, the cell phone within the reach, the
pager on the belt, the remote control, and the headphone
exemplify this reality. Each one of such devices is capable of
data communication (locally within the device, or remotely
through a network) and some form of processing. Such devices
have "digital intelligence" or are simply put "smart". But since
intelligence multiplies when communicated - as proven by the
world wide web and the Internet, connectivity between pervasive
devices will multiply the usefulness of such devices. As an
example, if our PDAs and cell phones could communicate
seamlessly, then we could have e-mail, Web access, short
messaging, etc. at our fingertips at any time and location. To
begin with, PDAs and cellular phones were not designed for this
function, but a simple "smart link" between these de