YIN ETAL:FOCUS AND SHOOT:EXPLORING AUTO-FOCUS IN RFID TAG IDENTIFICATION TOWARDS A SPECIFIED AREA 901 Yafeng Yin received the BE degree in computer Sanglu Lu received the BS,MS,and PhD science from Nanjing University of Science and degrees from Nanjing University,China,in 1992, Technology,China in 2011.She is currently work- 1995,and 1997,respectively,in computer sci- ng toward the PhD degree in the Department of ence.She is currently a professor in the Depart- Computer Science and Technology,Nanjing Uni- ment of Computer Science and Technology. versity.Her research interests include RFID sys- Nanjing University.Her research interests include tems and smart phones.She is a student distributed computing and pervasive computing. member of the IEEE. She is a member of the IEEE. Lei Xie received the BS and PhD degrees from For more information on this or any other computing topic, Nanjing University,China,in 2004 and 2010. please visit our Digital Library at www.computerorg/publications/dlib. respectively,in computer science.He is cur- rently an associate professor in the Department of Computer Science and Technology,Nanjing University.His research interests include RFID systems,pervasive and mobile computing,and Internet of Things.He has published more than 40 papers in the IEEE Transactions on Mobile Computing,IEEE Transactions on Parallel and Distributed Systems,IEEE Communications Surveys and Tutorials,ACM MobiHoc,IEEE INFOCOM.IEEE ICNP IEEE ICC,etc.He is a member of the ACM,IEEE,and a senior member of the CCF Jie Wu is the chair and a Laura H.Carnell profes sor in the Department of Computer and Informa- tion Sciences,Temple University.He is also an Intellectual Ventures endowed visiting chair pro- fessor in the National Laboratory for Information Science and Technology,Tsinghua University. Prior to joining Temple University,he was a pro- gram director in the National Science Foundation and was a distinguished professor in Florida Atlantic University.His current research interests include mobile computing and wireless networks routing protocols,cloud and green computing,network trust and security and social network applications.He regularly publishes in scholarly jour- nals,conference proceedings,and books.He serves on several editoria boards,including the IEEE Transactions on Service Computing and the Joumal of Parallel and Distributed Computing.He was a general co- chair/chair for the IEEE MASS 2006.IEEE IPDPS 2008.IEEE ICDCS 2013,and ACM MobiHoc 2014,as well as a program co-chair for the IEEE INFOCOM 2011 and CCF CNCC 2013.He was an IEEE Computer Society distinguished visitor,ACM distinguished speaker,and a chair for the IEEE Technical Committee on Distributed Processing(TCDP).He received the 2011 China Computer Federation (CCF)Overseas Out- standing Achievement Award.He is a CCF distinguished speaker and a fellow of the IEEE.Yafeng Yin received the BE degree in computer science from Nanjing University of Science and Technology, China in 2011. She is currently work￾ing toward the PhD degree in the Department of Computer Science and Technology, Nanjing Uni￾versity. Her research interests include RFID sys￾tems and smart phones. She is a student member of the IEEE. Lei Xie received the BS and PhD degrees from Nanjing University, China, in 2004 and 2010, respectively, in computer science. He is cur￾rently an associate professor in the Department of Computer Science and Technology, Nanjing University. His research interests include RFID systems, pervasive and mobile computing, and Internet of Things. He has published more than 40 papers in the IEEE Transactions on Mobile Computing, IEEE Transactions on Parallel and Distributed Systems, IEEE Communications Surveys and Tutorials, ACM MobiHoc, IEEE INFOCOM, IEEE ICNP, IEEE ICC, etc. He is a member of the ACM, IEEE, and a senior member of the CCF. Jie Wu is the chair and a Laura H. Carnell profes￾sor in the Department of Computer and Informa￾tion Sciences, Temple University. He is also an Intellectual Ventures endowed visiting chair pro￾fessor in the National Laboratory for Information Science and Technology, Tsinghua University. Prior to joining Temple University, he was a pro￾gram director in the National Science Foundation and was a distinguished professor in Florida Atlantic University. His current research interests include mobile computing and wireless networks, routing protocols, cloud and green computing, network trust and security, and social network applications. He regularly publishes in scholarly jour￾nals, conference proceedings, and books. He serves on several editorial boards, including the IEEE Transactions on Service Computing and the Journal of Parallel and Distributed Computing. He was a general co￾chair/chair for the IEEE MASS 2006, IEEE IPDPS 2008, IEEE ICDCS 2013, and ACM MobiHoc 2014, as well as a program co-chair for the IEEE INFOCOM 2011 and CCF CNCC 2013. He was an IEEE Computer Society distinguished visitor, ACM distinguished speaker, and a chair for the IEEE Technical Committee on Distributed Processing (TCDP). He received the 2011 China Computer Federation (CCF) Overseas Out￾standing Achievement Award. He is a CCF distinguished speaker and a fellow of the IEEE. Sanglu Lu received the BS, MS, and PhD degrees from Nanjing University, China, in 1992, 1995, and 1997, respectively, in computer sci￾ence. She is currently a professor in the Depart￾ment of Computer Science and Technology, Nanjing University. Her research interests include distributed computing and pervasive computing. She is a member of the IEEE. " For more information on this or any other computing topic, please visit our Digital Library at www.computer.org/publications/dlib. YIN ET AL.: FOCUS AND SHOOT: EXPLORING AUTO-FOCUS IN RFID TAG IDENTIFICATION TOWARDS A SPECIFIED AREA 901