Comment by vincenthwt

Yes, that's correct about OCR. I work as a machine vision engineer in the semiconductor industry, where each wafer usually has both OCR text and machine-readable codes such as barcodes, QR codes, or data matrix codes. The OCR typically uses the SEMI font standard.

To achieve accurate OCR results, I need to preprocess the image by isolating each character, sorting them from left to right, and using regular expressions (regex) to verify the output. However, I prefer machine-readable codes because they are simpler to use, feature built-in error detection, and are much more reliable. While deep-learning OCR solutions often perform well, they cannot guarantee the 100 percent accuracy required in our applications.

This approach is similar to how e-wallet payments use cameras to scan QR codes instead of OCR text, as QR codes provide greater reliability and accuracy.