USER'S MANUAL, VERSION 2.0
Copyright © Convergence Systems Limited 2021, All Rights Reserved
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Appendix I: FastID
FastID is a special Impinj extension to EPC protocol. By setting this, an inventory of Bank 1
EPC will have both Bank 1 EPC and Bank 2 TID coming back together in a simple inventory.
The PC value is automatically modified – specifically the first 5 bits that contain the encoded
EPC length. Since the added TID makes the whole return values longer, therefore this first 5
bits of PC is always made larger. The reader always captures the data based on the 5 bits of
PC, so it simply grabs a longer number. The user will then need to separate the EPC and the
TID bits – the length of which is known a priori because the TID Bank 2 length of Impinj tag
IC is known.
