our health and fitness decisions, redefining the doctor-patient
relationship and reducing healthcare cost. Looking at the
bigger picture, Futuresource research [17] points out that the
wearable electronics technologies will undoubtedly continue
to expand in consumer sectors, and also acceptance will
continue in other sectors, in particular healthcare sectors, and
the market growth at a value of over $20 billion by 2017.
The activity monitoring of humans is a very active area
of research and a lot of activities are going on. There
are many parts which are to be considered in a global
way: (1) types of sensors to be used; (2) type of wireless
protocols to be employed; (3) monitoring of activities to
be considered; (4) methodology to determine activities or
extraction of important features; (5) design and development
of small, light-weight, powerful and low-cost smart sensor
nodes; (6) harvesting of energy for normal operation and
communication; (7) ability to be used with the present day
mobile devices; (8) flexible to configure the system for a new
user without much difficulty.
II. ARCHITECTURE OF T