This document discusses successful geofencing marketing campaigns. It provides 6 steps for an effective geofencing strategy: 1) target locations where customers spend time, not just stores; 2) use small, targeted geofences within a 4 minute travel time of locations; 3) send brief, locally relevant messages that prompt action; 4) trigger important actions with geofences; 5) consider timing of messages; and 6) thoroughly measure campaign performance. It also reviews a case study of a Taco Bell promotion that used geofencing to alert customers of drink deals and encourage them to meet friends at locations.