Safe sensing: Controlling exposure in a sensor rich world.

摘要

Consumer electronic devices increasingly use arrays of sensors to offer rich functionality to users. Naturally, these devices collect data, both banal and sensitive, with no discrimination or differentiation. This makes it easy, possibly too easy, to share information that can be embarrassing or even damaging.;We explore the nature of data collected from these devices and present a thesis that uses attribute based access control (ABAC) to mediate access to sensors and their data using the context and content of sensor information. This includes the presentation of a working definition of ABAC that applies to sensors and sensor data along with a proposed framework that aligns with the principle of least privilege while facilitating the sharing of information.;Using lifelogging data collecting during an in situ human subjects study, we identify useful attributes from which to base access control policies. Lastly, we present two systems that infer attributes from image data to inform useful access control decisions based on the image scene location and the presence of sensitive objects in the image.