This book presents the collected papers from the 2011 Workshop - "RFIDsec '11 Asia"--RFID security, co-hosted by Peking University and Penn State University in Wuxi, China, in April 2011. RFIDsec Asia is the Asian counterpart of the earlier RFID security workshop, RFIDsec, which was set up in 2005. It provides an Asia-based forum to address fundamental issues in theory and practice related to security and privacy issues, designs, standards and case studies in the development of radio frequency identification (RFID) systems, EPC global networks and the Internet of Things (IoT).