How we almost ended up with a bull’s-eye bar code
Few objects in the world are more immediately recognizable than the bar code. After all, bar codes are all around us. They’re ...
Hackaday1y
bar code
This rectangular-shaped QR code is designed to be used on narrow spaces, with an aspect ratio similar to that of a traditional 1D bar code. There are quite a few variations of rMQR, but the ...