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Real parmiggiano reggiano is so expensive that it can be used as a sort of currency in some places here in italy so i guess it makes sense.
How would they go about making it work tho?
stamp serial in cheese wheel, then sign that number (or sth else) cryptographically and load that into the chip. have some server to check if your serial is uniqe and signed tho yiu could just stamp a qr code into the cheese and make them register the serial on the uniqe-ness server
Why would you need to put it in a chip for that is the part I don't get, there's a bunch of companies that do like microscopic confetti that has serial numbers etched into them for e.g. preventing copper theft or tracing ATM robberies, surely that would work for cheese too
Real parmiggiano reggiano starts at something like 15 Euro a kilo... young low-grade stuff is still the real deal. For the better stuff you're looking at prices in the range of beef filet but usually not more than 60, 70 Euro.