You can encode the first order or link to a tracking website. Depending on the depths of the supply chain this means the wholesellers name needs to match with the factory, production and sale date. If there is 20 steps in between this would get difficult, but such a supply chain should not be trusted in the first place.
So it would do the same as the tracker chip. And since there is no encryption mentioned, the signal of the tracking chip could be as easily copied as the QR code.
You can encode the first order or link to a tracking website. Depending on the depths of the supply chain this means the wholesellers name needs to match with the factory, production and sale date. If there is 20 steps in between this would get difficult, but such a supply chain should not be trusted in the first place. So it would do the same as the tracker chip. And since there is no encryption mentioned, the signal of the tracking chip could be as easily copied as the QR code.
nobody later in the supply chain will have any way of verifying what the production date or factory of their cheese should be
the sale date would only really apply if the same cheese is never sold twice, which seems unlikely and not very scalable
it’s significantly harder to copy an embedded proprietary ID chip than it is a QR code