Each arrow in Fig. 1 represents an information flow in the RFID system. Material characteristics must be identified before examining the information management flow with RFID.
Tags in the system are regarded as a starting point for identifying material information.
Tags are recognised as construction materials, because they are physically attached to the materials.
The decision on attaching and reading tags results from key management needs as well as on-site contexts.
The major characteristics of tags [22] also should be carefully considered.
Therefore, attaching and selecting tags are the first step to start applying ILM with RFID to material control.