This work seeks to strengthen interaction within a research community through a centrally-located physical device that presents online presence information in a semi-public space. The device uses a map metaphor to represent a set of connected labs. As people move within the lab, those who wish to interact with lab users can use the display to guide their interaction approaches, by supporting educated guesses as to arrivals, departures, and work patterns. The paper reports on the lessons learned about the device's characteristics, and provides anecdotes and observations on ways in which this type of device can improve communication and enhance community.