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Overview
Bar
codes are simply a way for machines to read numbers and letters.
Our numbers and alphabet are converted into vertical bar combinations.
This ensures quick, accurate and consistent results.
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Scanners
Scanners
are the "eyes" of the system. They emit a bright
red laser light. The wands or pistols are designed to see
across a complete barcode at once. It takes the scanner less
than a second to get an accurate read. Just like the grocery
store checkout scanner, they beep their approval in an instant.
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The
Tracker series uses "code
128" barcode format that allows encoding both numbers and letters
(see picture below). On the other hand, if you look at the barcode
on your cereal box or other grocery item, you'll see a row of numbers
at the bottom. This is the information that is "coded"
in the bars - in this case the "Universal Product Code"
(numbers only).
Also included in a barcode encoding is check
digits so that the reader can verify it has seen the complete code.
In Evidence Manager,
the evidence label encodes the file number and the item
number. The evidence description is not encoded in the bars but
is instead referred
to in the associated databases. Its like the barcode is a
key to open the file's door where all the related information is
stored.
Advantages
The
advantage of barcodes is speed and accuracy. In
the case of inventory, the differences are dramatic. With a manual
inventory, only a few dozen items of evidence can be checked in
an hour, usually with 2 people.
With
Evidence Manager, you use the Portable Data Terminal. You simply
read the location barcode, then all the barcodes in that bin. One
person can do hundreds in an hour!
When
you are done, simply connect the portable to the main computer and
download the data. The computer will then do a complete cross-check
of all evidence. You can then print an exception report.
File
Tracker and Equipment Tracker identify each person and
item with a barcode. Two quick scans to "sign" anything
in or out. It's faster than a signature and legible! And it includes
time, serial numbers, and more...
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