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OCR Check Character
You may want to print and verify a check character in order to enhance the
security of your OCR application. The image scanner can be programmed for
almost any type of check character. A number of presets are provided for com-
mon check character uses (e.g., modulo 10 and modulo 36).
Scan the
OCR Modulo 10
or
OCR Modulo 36
Check Character
barcode to
specify the type of check character used in the OCR strings you’re scanning.
The image scanner will then only read OCR character strings with a valid check
character. The image scanner transmits the OCR data without the check char-
acter data. You must specify the location of the check character in the template
with a
c
.
Example: You need to read any combination of seven digits, with a modulo 10
check character in the eighth position. The template would be:
dddddddc
To create this template, you would enable the OCR-A font. Scan the
Modulo
10 Check Character
symbol. Then scan the
Enter OCR Template
symbol,
and scan the
d
from the OCR Programming Chart seven times, and scan the
c
once. Scan
Save OCR Template
(page 9-13). This template will let you
read any combination of six digits with a correct check character after. (If the
check character is invalid, data is discarded.) For example, the following
string could be scanned:
01234569
and the output would be: 0123456
OCR Modulo 10 Check Character
Scan this symbol to program the OCR template for a simple modulo 10 check-
sum of the digits 0 through 9.
OCR Modulo 10 Check Character