This paper provides a survey on radio frequency identification (RFID) technology. Initially RFID
tags were developed to eventually replace barcodes in supply chains. Their advantages are
that they can be read wirelessly and without line of sight, contain more information than
barcodes, and are more robust. The paper describes the current technology, including the
frequency ranges used and standards. With the increasing ubiquity of RFID tags, however,
privacy became a concern. The paper outlines possible attacks that can violate one's privacy
and it also describes counter measures. The RFID technology did not stop at item-level
tagging. The paper also presents current research that focuses on locating and tracking
labeled object that move. Since the uses for RFID tags are so widespread, there is a large
interest in lowering the costs for producing them. It turns out that printing tags might become a
viable alternative to traditional production. The paper reviews the current progress.