This　paper　presents　our　research　on　secure　and　accurate　targeted　mobile　coupon　delivery.　Our　goal　is　to　enable　the　secure　delivery　of　targeted　coupons　to　eligible　users　equipped　with　mobile　devices,　whose　behavioral　profiles　accurately　satisfy　the　targeting　profile　defined　by　the　vendor.　Our　design　well　preserves　user　privacy,　and　further　provides　the　strict　security　guarantee　of　vendor　protection,　by　verifying　user＇s　eligibility　for　a　coupon　without　revealing　the　vendor＇s　targeting　profile.　We　first　show　a　basic　approach　which　can　effectively　address　the　challenges　posed　by　secure　and　accurate　targeted　coupon　delivery,　via　properly　leveraging　Yao＇s　garbled　circuits.　In　order　to　achieve　practical　performance　for　resource-limited　mobile　devices,　we　then　present　our　proposed　design,　which　imposes　lightweight　workload　on　the　user　side,　via　properly　bridging　together　homomorphic　encryption　and　Yao＇s　garbled　circuits.　We　implement　a　preliminary　user-side　prototype　and　deploy　it　on　an　Android　smartphone　to　evaluate　the　performance.　Extensive　experimental　results　demonstrate　that　our　proposed　design　achieves　practical　performance　for　mobile　devices.