@INPROCEEDINGS {qun_icdcs08_1,
	author = {Chiu C. Tan and Bo Sheng and Qun Li},
	booktitle = {{IEEE ICDCS} },
	PAGES = {--},
	TITLE = {How to Monitor for Missing {RFID} Tags},
	Address ={Beijing, China},
	Month={June},
	YEAR = {2008}
	}

Abstract 

As RFID tags become more widespread, new approaches
for managing larger numbers of RFID tags will be needed.
In this paper, we consider the problem of how to accurately
and efficiently monitor a set of RFID tags for missing tags.
Our approach accurately monitors a set of tags without collecting
IDs from them. It differs from traditional research
which focuses on faster ways for collecting IDs from every
tag. We present two monitoring protocols, one designed for
a trusted reader and another for an untrusted reader.