Privacy　protection　is　a　very　important　issue　and　solutions　must　be　developed　for　wide　acceptance　of　location　based　services　(LBSs)　in　wireless　applications.　Current　approaches　rely　mostly　on　the　use　of　privacy　policies　to　describe　and　solve　this　problem　in　an　ad　hoc　way.　In　this　paper,　we　propose　a　method　based　on　the　three-dimensional　access　control　model　to　support　privacy　requirements.　We　show　that　our　method　can　better　describe　and　support　user　location　privacy　requirements　in　LBSs.　By　introducing　the　notions　of　privacy-concerning　subjects　and　enhancing　the　traditional　access　control　mechanism,　we　demonstrate　how　our　method　can　provide　all　the　privacy-concerning　users　with　the　necessary　means　of　controlling　access　to　private　location　information.　©　2009　IEEE.