Radio Frequency Identification (RFID) technology has been implemented in various areas such as transportation, retail sales, supply chain, healthcare and defence. When RFID technology is considered for defence applications in particular, it is necessary to test and evaluate the technology to determine definitively the tag performance and system security issues. In this report, we test and evaluate the readability and security of four ultra-high-frequency (UHF) passive RFID tags, which are all compatible with the Electronic Product Code ™ (EPC) global Generation 2 (Gen 2) standard. The tags were tested in free space. The testing established baseline parameters for passive tags, which allow for comparison between different tags and the evaluation of their security features. The objective of this paper is to identify potential technical and security challenges to the application of RFID technologies in the Canadian Forces (CF) and to suggest potential solutions to these challenges.