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Symbology Quiz

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Which symbology is used for Point of Sale applications?
Code 39
PDF417
UPC

Which 2D symbologies have been incorporated in application standards?
QR Code, MaxiCode and Data Matrix
MaxiCode, PDF417, and Posicode.
PDF417, MaxiCode and Data Matrix.

What properties of UPC/EAN make it scanable by omni-directional scanners?
Numeric only capability
Over-Square
Continuous code

Why is Code 39 called a discrete code?
It is alphanumeric
It has an intercharacter gap between each bar and space pattern.
It's bar and space pattern contains 3 wide elements.

Which symbology can easily generate Kangi characters?
MaxiCode
QR Code
Interleaved 2 of 5

If you have limited area for the bar code symbol, which symbology takes up the least amount of space for numeric data?
EAN/UCC 128
Code 39
PDF417

Which 2D symbology is most commonly used for parts marking?
Maxicode
Data Matrix
PDF417

What is the best way to make Code 39 fit in the space available for it?
Remove the quiet zones (margins or white space on the left and right of the bar code).
Making the X-dimension or the ratio of wide to narrow elements smaller.
Reducing the amount of data in the bar code.

If you are using Interleaved 2 of 5, how can you prevent short reads?
Add a bearer bar around the symbol.
Make sure that the scanning beam crosses horizontally over the entire symbol, or that the entire image is captured.
Set the decoder to the exact data character length of the symbol.

What's the best way to ensure accurate scanning of a bar code symbol?
Look at the bar code and see if the bars are sharp and easy to distinguish.
Scan the bar code with a bar code scanner.
Test the bar code with a bar code verifier.