User Information
Bar code reader
9
Interleaved 2 of 5 code
Message length, including the checksum character if used, must
be an even number. If it is not, a leading zero is inserted. See
Table 2
.
Each character is represented by five elements, of which two
are wide and three are narrow. Characters in odd-numbered
positions are encoded with five bars. Characters in even
numbered positions are encoded with the five spaces associated
with the preceding even character. There is no character
separator.
EAN/JAN-13 codes
The printed EAN/JAN-13 symbol is divided into left and right
halves by a pattern of narrow bars and spaces. Two different
code pattern sets are defined for the left side and one for the
right side. Bars and spaces may be 1, 2, 3, or 4 units wide. See
Table 3
.
Table 2
Interleaved 2 of 5 code properties
Character set
Numerals: 0 to 9 (check values 0 to 9)
Message length
Variable (may require a dummy character)
Checksum
Optional