Haven't seen those in use a lot but I believe some of the larger stores in Europe and Japan had use for those "Dot Matrix Pricing Labels". One of my first jobs

Haven't seen those in use a lot but I believe some of the larger stores in Europe and Japan had use for those "Dot Matrix Pricing Labels". One of my first jobs involved run length encoding the 2-bit BMPs to be transferred to these labels. The label itself had code embedded in it to decode them. Fun times...