4 ms·
QR codes already have built-in Reed-Solomon error correction at different levels (L:7%, M:15%, Q:25%, H:30%), which is why they can often be read despite partia
by ethan_smith 1y ago
QR codes already have built-in Reed-Solomon error correction at different levels (L:7%, M:15%, Q:25%, H:30%), which is why they can often be read despite partial damage or obstruction.