Though the motivation for developing Ambient Assisted Living (AAL) systems
is incontestable, significant challenges exist in realizing the ambience that is essential to the
success of such systems. By definition, an AAL system must be omnipresent, tracking
occupant activities in the home and identifying those situations where assistance is needed
or would be welcomed. Embedded sensors offer an attractive mechanism for realizing
ambience as their form factor and harnessing of wireless technologies aid in their seamless
integration into pre-existing environments. However, the heterogeneity of the end-user
population, their disparate needs and the differing environments in which they inhabit, all
pose particular problems regarding sensor integration and management