ABSTRACT-- The highest ideal of ubicomp is to make a computer so imbedded, so fitting, so natural, that we use it without even thinking about it. Pervasive computing is referred as Ubiquitous computing through out the paper.

One of the goals of ubiquitous computing is to enable devices to sense changes in their environment and to automatically adapt and act based on these changes based on user needs and preferences. The technology required for ubiquitous computing comes in three parts: cheap, low- power computers that include equally convenient displays, a network
that ties them all together, and software systems implementing ubiquitous applications. Current trends suggest that the first requirement will easily be met.

Our preliminary approach: Activate the world. Provide hundreds of wireless computing devices per person per office, of all scales. This has required network in operating systems, user interfaces, networks, wireless, displays, and many other areas. We call our work “ubiquitous computing”. This is different from PDA’s, dynabooks, or information at your fingertips. It is invisible; everywhere computing that does not live on a personal device of any sort, but is in the woodwork everywhere.

Single-room networks based on infrared or newer electromagnetic technologies have enough channel capacity for ubiquitous computers, but they can only work indoors.
Cryptographic techniques already exist to secure messages from one ubiquitous computer to another and to safeguard private information stored in networked systems.
We suggest using cell phone device available in the market for ubicomp also i.e., the handheld device will be used for both ubicomp and also as a cell phone.