In this paper, we explore an architecture, called K-Trek, that enables mobile users to travel across knowledge distributed over a large geographical area (ranging from large public buildings to a national  ...  Local interactions among K-Trek devices and the distribution of information in the larger environment adopt some typical peer-to-peer patterns and techniques.  ...  Conclusions We have introduced an architecture, called K-Trek, that provides both context-sensitive information and "lazy" distribution of information over a wide area network, at very low cost.  ...