In this paper we present a novel mobile buddy finder, that combines the
advantages of a mobile camera device (such as a smartphone) with
traditional large-scale paper maps. We applied a Magic Lens approach that
uses a mobile camera-display-unit (such as a smartphone) as a lens to
provide a dynamic overlay on a traditional paper map. Paper maps are still
superior in some aspects to their digital counterparts. They provide high-
resolution, large-scale information with zero power consumption. Using a
mobile camera-display-unit as a lens over a city map, a user can easily
browse the position of her buddies without cumbersome scrolling, panning
or zooming of a digital map on a small screen. We explain the main
concept of this idea and present first results with a fully implemented
prototype.