with　the　fast　development　in　mobile　computing　devices,　location-sensing　technology　and　wireless　communication,　new　applications　for　share　users＇　real-time　location　information　are　developing　at　an　amazing　pace.　Location　privacy　is　of　utmost　concern　for　location-sharing　services.　There　is　already　a　full　agreement　that　users　would　like　to　have　the　complete　control　over　their　location　information.　Existing　privacy　protection　methods　often　let　users　specify　their　privacy　peferences　to　the　service　provider　and　thus　not　only　fail　to　consider　the　dynamic　nature　of　privacy　preferences　but　also　fail　to　protect　user　privacy　from　service　provider.　In　this　paper,　we　propose　an　user-centric　privacy　access　control　method.　By　separating　sensitive　privacy　polices　apart　from　standard　privacy　policies,　which　are　now　stored　at　user　side　and　therefore　fully　under　user＇s　control,　we　demonstrate　that　our　system　can　provide　users　with　a　flexible　way　of　complete　controlling　over　information　about　their　location　without　adding　too　much　user　burden.　©　2010　IEEE.