Problem is that’s human readable. Unless you are the nerdiest of nerds, you’re not reading QR code or even most plain old barcodes.

Related, a few years ago, I could read 3of9 barcode font by sight because I spent like 4 years programming Honeywell scanners for POS systems and created an inventory system to track 60,000 iOS devices where I added a serial number and inventory number barcode for each device.