Due to a limitation on a construction schedule at that time, key material types for the read distance test only involved four key material types: STM (Window system, Curtain-wall), MTM (H-Beam), PTM (Gypsum board), and KTM (Tile).
The read distance and rate depends on the characteristics of the material as well as various test conditions, viz. the antenna types of an RFID reader, RFID frequency, packaging design of an RFID tag, reading angles and temperature [20] and [31].
Keeping those constraints in mind, this paper highlights the performance of the tags and material types in terms of ILM.