Device-Enabled Authorization in the Grey System

摘要

We describe the design of Grey, a set of software extensions that convert an off-the-shelf smartphone-class device into a tool by which its owner exercises and delegates her authority to both physical and virtual resources. We focus on the software components and user interfaces of Grey, highlighting the features of each. We also discuss an initial case study for Grey, in which we are equipping over 65 doors on two floors of office space for access control using Grey-enabled devices, for a population of roughly 150 persons. Further details of Grey, and this and other applications, can be found in a companion technical report.