@unpublished{TUW-212780, author = {Retscher, G{\"u}nther}, title = {Wi-Fi Positioning with Smartphones}, year = {2012}, keywords = {WLAN, Wi-Fi, Trilateration, Location Fingerprinting, Indoor Positioning, Geosensors, Smartphones, Mobile Devices, Positioning Accuracy}, note = {invited; talk: 9th International Symposium on Location-Based Services LBS 2012, M{\"u}nchen; 2012-10-16 -- 2012-10-18} }