Reach merges inherently local communications with user requests or offers of services. It is built atop data from services users already use, like Facebook and Google Latitude. Reach is intended to demonstrate a flexible, attractive mobile interface that allows users to discover "interesting" aspects of the environment and to call upon services as needed. These can range from a broadcast offer to serve as a triage medic, to a way to share a cab or get help for a technical service problem like plugging into a video projector.