1.
2016
Pallav Kumar
GlobalLogic
4/28/2016
Pervasive Computing

2.
Pervasive computing revolutionizes the way individual interaction, communicate, and
collaborate in an elegant fashion with the world around them.
A concept based on the vision described by Mark Weiser nearly a decade ago:
“The most profound technologies are those that disappear. They
weave themselves into the fabric of everyday life until they are
indistinguishable from it”
Computing is no longer a discrete activity bound to a desktop; network computing and
mobile computing are fast becoming a part of everyday life and so is the Internet.
Rather than being an infrastructure for computers and their users alone, it is now an
infrastructure for everyone. We expect devices like PDAs (Personal Digital Assistants),
mobile phones, offices PCs and even home entertainment systems to access information
and work together in one integrated system and the challenge is to combine these
technologies into a seamless whole and on the Internet.

3.
Definition
Pervasive Computing is a computing technology that pervades the users’ environment
by making use of seamless connectivity of multiple independent information devices
embedded in the environment of the users.
It does so by:
 Making use of multiple independent information devices (fixed or mobile,
homogeneous or heterogeneous)
 Interconnecting these devices seamlessly through wireless or wired computer
communication networks
 Providing a class of computing / sensory / communication services to a class of
users, preferably transparently and can provide personalized services while
ensuring a fair degree of privacy / non-intrusiveness.

4.
Enterprise vision
Pervasive computing is an integral component of building tomorrow’s enterprises. By
turning nearly everything into a computing device, pervasive computing is making it
imperative for companies to reach their end-users through a multitude of devices —
both wired and wireless. Users in turn are accessing content and applications through
multiple channels as well as social networks, resulting in an exponential growth of data
that needs to be constantly monitored and analyzed.
Intelligent enterprises are drawing inferences as well as key decision points by
analyzing data from various sources about their customers, competitors, vendors,
markets, products as well as services. Enterprises are able to garner localized, specific
intelligence using sensor networks, thereby enabling them to develop innovative
products and services, which are better aligned to market needs.
Just in time computing and storage, using cloud based computing platforms and
services are resulting in commoditization of infrastructure thereby enabling enterprises
to better optimize computing and storage power. Infosys is leveraging these
technologies to deliver lower Total Cost of Ownership (TCO), higher quality of service
and better agility for our client
Enterprises need to provide a seamless user experience across multiple access devices as
well as multiple access networks. They need to effectively connect and engage end
customers through different networks. Analysis of the vast amount of data collected
through these networks allows organizations to study demographics of their users and
cater to them accordingly.

5.
Advantages
We increasingly rely on the electronic creation, storage, and transmittal of personal,
financial, and other confidential information, and demand the highest security for all these
transactions and require complete access to time-sensitive data, regardless of physical location.
We expect devices -- personal digital assistants, mobile phones, office PCs and home
entertainment systems -- to access that information and work together in one seamless,
integrated system. Pervasive computing gives us the tools to manage information
quickly, efficiently, and effortlessly.
It aims to enable people to accomplish an increasing number of personal and
professional transactions using a new class of intelligent and portable appliances or
"smart devices" embedded with microprocessors that allow users to plug into intelligent
networks and gain direct, simple, and secure access to both relevant information and
services. It gives people convenient access to relevant information stored on powerful
networks, allowing them to easily take action anywhere, anytime.
Pervasive computing simplifies life by combining open standards-based
applications with everyday activities. It removes the complexity of new technologies,
enables us to be more efficient in our work and leaves us more leisure time and thus
pervasive computing is fast becoming a part of everyday life.

6.
From Developer’s Prospective
Mobile and stationary devices will dynamically connect and coordinate to seamlessly
help people in accomplishing their tasks. However, for this vision to become a reality,
developers must build applications that constantly adapt to a highly dynamic
computing environment.
թ Systems need to expose change, so that applications can implement their own
strategies for handling changes.
թ Systems need to make it easy to compose applications and services dynamically,
so that they can be extended at runtime.
թ Systems need to separate data and functionality, so that they can be managed
separately and evolve independently.
Systems need to be dynamically reconfigured in order to properly adapt to their
environment (context). An appropriate solution to provide re-configurability is Aspect-
Oriented Software Development.
Business objects are exposed as services considering all security facets.

7.
Evolution

8.
Winding up…
Pervasive computing provides an attractive vision for the future of computing. Well, we
no longer will be sitting down in front of a PC to get access to information. In this
wireless world we will have instant access to the information and services that we will
want to access with devices, such as Smartphone’s, PDAs, set-top boxes, embedded
intelligence in your automobile and others, all linked to the network, allowing us to
connect anytime, anywhere seamlessly, and very importantly, transparently. Computational
power will be available everywhere through mobile and stationary devices that will
dynamically connect and coordinate to smoothly help users in accomplishing their
tasks.