Codablock is a family of stacked 1D barcodes (Codablock A,. Codablock F, Codablock 256) which was invented in Identcode Systeme GmbH in Germany in 1989 by Heinrich Oehlmann. Codablock barcodes are based on stacked Code 39 and Code 128 symbologies and have some advantages of 2D barcodes.
The barcodes were used mostly in health care industry (HIBC) and presently, Codablock codes are fully replaced by Data Matrix