How to encode the null character (ASCII 0) in a barcode
Null characters may be encoded in
Code 39,
Code 128 and most 2D
barcode types such as
Data Matrix. However, the null
character represents the end of a data string in most applications, and
therefore, any data encoded after it will usually be truncated by the barcode
scanner or the application itself. In Data Matrix, the format ~dNNN represents
the
ASCII character encoded where NNN is the ASCII number. For example, ~d009
encodes a tab and ~d000 encodes the null character.
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