How much data can a QR code store, and how does it work? QR codes encode numeric, alphanumeric, byte/binary data, and Kanji characters. They can store up to 2953 bytes of data. But just like any ...

Recently [mit41301] wondered about increasing the data capacity of QR codes ... a traditional 1D bar code. There are quite a few variations of rMQR, but the largest can hold 361 bytes.