It's a bit harder than that. 2D Barcodes, Data Matrices, QR Codes, all explicitly have a lot of redundancy built in for resilient error correction. A chip has n

It's a bit harder than that. 2D Barcodes, Data Matrices, QR Codes, all explicitly have a lot of redundancy built in for resilient error correction. A chip has none of that, it's designed to do its electrical work sitting in a package forever, not to be looked at by anything or anyone. And then you have separate layers with vastly different physical (and photographic) properties, and the answers to any questions is often in how they interact...