In a method of determining and sharing proximity of device users within an environment of an observation platform, the observation platform determines that a first communication device associated with a first user is in the environment of the observation platform. The observation platform detects that the first communication device is in proximity to a second communication device associated with a second user. Responsive to the detection, the observation platform generates proximity information for the first user and the second user. The observation platform relays the proximity information to a second observation platform via a computer network, wherein a second environment of the second observation platform is separate from the environment of the observation platform.