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Encoded Tilde character scans as another character.

Recently we have run into the following issue using your Data Matrix product with the tilde (~) character, which is rare in our barcodes but can happen.

I set up a test harness using your (Data Matrix Java product)
com.idautomation.fontencoder.datamatrix.DataMatrixEncoder class and found the following :


Value passed from report to IDAutomation via wrapper class is abc~abc

We need to encode the ~ character and have it scan as the ~. However, the scanner produces:
abc¬abc

Encoded Data Output:
ANCKGNBJBLEPHK
ANLFMFKFCHDHAK
ANMIPIHBMBKFKK
DDLLLDDDLLLDDL

My Code:

System.out.println("IN Test UseIDAutoCodeDirect");

DataMatrixEncoder dme=new DataMatrixEncoder();

dme.setEncodingMode(DataMatrixEncoder.E_ASCII);

dme.setProcessTilde(true);

System.out.println("Encoding Mode "+dme.getEncodingMode());

System.out.println("Preferred Format "+dme.getPreferredFormat());

System.out.println("Process Tilde "+dme.getProcessTilde());

System.out.println( dme.fontEncode("abc~d126abc") );


08-12-14     2123 day(s) ago    

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Ben

Best Answer

There may be a couple of reasons for the issue.

As a test, set the:
Encoding Mode to ASCII
[link url=]ProcessTilde[/link] to True
DataToEncode as abc~d126abc where the ~d126 is the ASCII encode for the ~ character

If the character scans as ¬ then, it may be related to the language/region settings.

I placed the encoded data in Word, resolved the spaces, and applied the IDAutomationDMatrix font. I scanned the barcode with the:

· SC7USB2D
· Metrologic Focus
· Honeywell 4600g

The result for each scanner is abc~abc.

I scanned the barcode into IDAutomation's ASCII Decoder just to make sure there was not an additional character causing the issue. The <CR> is a return caused by the scanner. The result is:

image

I also re-created the same encoding using our other products as well as the Java Encoder, and it produces the same encoded data with the same settings. The barcode scans as abc~abc.

Posted 2123 day(s) ago

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Other Answers (1)
Thanks for this. After investigating further this morning it seems to depend on the region & language settings on the client machine.

If I change my keyboards and input languages to English (United States) it scans as abc~abc

When I change back to English (United Kingdom) it scans as abc¬abc

The problem I suppose is that we are working in a multinational environment where users will have different region & language settings

Posted 2123 day(s) ago

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