Library Technology Reports (vol. 48 no.5) "RFID in Libraries: A Step toward Interoperability" by Lori Bowen Ayre explains how RFID works for identification, security, and materials handling. It helps readers evaluate the costs and benefits of implementation. NISO recently approved a new standard for RFID which holds potential for interoperability. This issue of Library Technology Reports provides background on the evolution of the standard and discusses issues for libraries and their vendors in migrating to the new standards.