[PIF]

RFID inventory control chip.

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You are sure that’s all it does?

[Spktyr]

Yeah, there’s no battery in it - too small and too thin. It’s clearly a passive RFID device. Explanation here to save myself typing.

https://www.atlasrfidstore.com/rfid-insider/active-rfid-vs-passive-rfid

One of my clients uses a similar passive RFID system to track production lots of their product, but it’s in the form of a ‘sticker’ that’s maybe as thick as a credit card that contains the chip. One is stuck on each box of product as it is completed and moved into the warehouse; makes inventory easier, but you basically have to be in contact range for it to work.

[Widget Jr]

Look up inventory control chip, what they are and look like.

If it had some other purpose, what then? How can China track the commercial sales of millions of masks all over the planet, from shipping, to distribution, to sales, to use? How to get all the data and analyze it? Can anyone else try the same thing with other RFID chips?