There is an increasing capability to provide detailed information
about movements and activities of individuals due to the
proliferation of networked mobile devices, transactions, and sensor
systems. The data generated in this way has privacy and security
dimensions that must be negotiated to achieve the optimal benefits.
In this talk I will discuss some of the tensions associated with this
trend with respect to a pair of case studies. The first of these
concerns the use of sensor data from 'smart' buildings to assist
enterprise workflow. The second concerns the collection of medical
data from monitoring patients in their homes through the use of
networked devices. The goal in each case is to explore practical
approaches that respect privacy while improving efficiency. At the
end I will discuss some preliminary results we have obtained from
surveys concerning attitudes about balancing safety with security
through monitoring and surveillance.