Sensors for Body-Area Networks Could Enable New Healthcare Applications
From: University of Michiagn EECS News - 2010-2011

Prof David D. Wentzloff is investigating new technology that will exploit the
wireless communication standard being developed by IEEE for body area
networks. Body area networks involve sensors placed on someone's body that
talk to each other, or that talk to  somethign external or internal to the
body. For example, an individual could have an internal sensor that monitors
blood levels related to their diabetes or seizure disorder that communicates
with a patch on the skin, which, in turn could communicate with a cell phone
application. Body area sensor networks may also be used to detect falls in
the elderly, or to alert nurses when very ill patients try to get out of bed. 

Source:
http://www.eecs.umich.edu/eecs/about/EECSNews/EECSNews10.pdf (page 6)

Link:
David D. Wentzloff
http://www.eecs.umich.edu/~wentzlof/