49 A stacked bar code specifically designed
to label small objects. Contains from 2 to 8 adjacent
rows, each separated by a one-modular separator
bar. Each row contains 8 characters, 4 "words"
made up of 2 characters each. Each row has a start
code and a stop code.
49 was among the first codes developed to pack a
lot of information into a small space. A continuous,
variable-length symbol, it can encode the full ASCII
character set. I t s read with modified laser
or CCD scanners, but can be printed by standard
labeling technology. Creator David Allais at Intermec
Technologies designed this stacked code with two
to eight rows, each row having 18 bars and spaces.
Its structure is a cross between UPC and Code 39.