Who offers such a definitive resource?
I am not aware of any definitive list. However, GS1 publishes a list of companies that have applied for a Mask Designer ID Assignment (MDID). The MDID is the first eight bits of the tag identifier (TID) memory bank of an EPC Gen 2 RFID tag, so any company that wants to manufacture Gen 2 chips needs to obtain such a number. I would expect GS1's list to include all Gen 2 chip manufacturers. However, the list probably includes some firms that never went ahead and produced chips, and maybe one or two still working on chips.
—Mark Roberti, Founder and Editor, RFID Journal
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