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 ...
Hackaday1 年
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 ...