QR codes are just symbols in a camera readible way and barcodes numbers in a camara readible way.
A storage medium for 0´s & 1´s like a USB stick or a disc but way less storage.
They dont add any security, heck when you would have looked at barcodes you would likely have realised that the same product uses the same code (and not each one being unique)
Their use cases are cashiers dont have to manually find/type each product into their terminal but have a scanable ID & QR Codes are mostly to open websites as users without having to type a potentionally long URL.
In booth cases they remove the human error.
NaibofTabr@infosec.pub 1 day ago
Yes, a QR code is a representation of digital data. There are different versions which can represent different amounts of data. The represented data can be anything that you want, as long as the scanning device can interpret that data as something useful.
An RFID tag holding a blockchain token string also does not add any security, it’s just a different thing holding an alphanumeric value. They could just use RFID tags without the blockchain, the result would be the same.
But my point is mostly that this is already an entirely solved problem, you don’t need very many bits to store a useful unique ID code, you certainly don’t need a blockchain-token-value amount of bits, and a printed paper tag is cheaper, easier to manufacture, and less environmentally impactful than a microchip.