Although three tagging points may be an ideal guideline for material control with RFID, other tagging possibilities between each lifecycle stage may occur to fulfil specific needs.
For example, it is possible to tag components between S2 (shipping) and S3 (carrying in), or between S4 (warehousing in) and S5 (warehousing out). These additional tagging points depend on specific requirements as well as the circumstances.
Nonetheless, in terms of PMIS (Project Management Information System), tagging points before S3 is the same as T1.
This is because PMIS needs only the information of R1 (shipping).
Thus, even if there may be other tagging points, the three tagging points shown in Fig. 2 are typical locations in information management.