Timeline: Video Traces for Awareness

Always-on media spaces broadcast video to provide awareness and encourage interaction between collaborators. This video can be captured on the fly and presented as a video trace – a visualization allowing viewers to rapidly explore the history of the video stream, ostensibly to gain a better understanding of the activities and availability their collaborators. We present a visualization system that allows detailed exploration of a large video stream. However, the system is so effective that it raises significant privacy concerns.