  Today, mobile data owners lack consent and control over the release and
utilization of their location data. Third party applications continuously
process and access location data without data owners granular control and
without knowledge of how location data is being used. The proliferation of IoT
devices will lead to larger scale abuses of trust.
  In this paper we present the first design and implementation of a privacy
module built into the GPSD daemon. The GPSD daemon is a low-level GPS interface
that runs on GPS enabled devices. The integration of the privacy module ensures
that data owners have granular control over the release of their GPS location.
We describe the design of our privacy module and then evaluate the performance
of private GPS release and demonstrate that strong privacy guarantees can be
built into the GPSD daemon itself with minimal to no overhead.
