![]() Instead, you will have to format your data by adding start and stop symbols and a check digit. When using a Code 128 barcode font in office applications like Word or Excel, you can't just simply select your numbers and change the font. Using a Code 128 barcode font in Excel, Google Sheets ![]() It without a checksum, a common mistake when using a Code 128 barcode font, see below. If the code does not scan you may have created With Code 128 almost all barcode readers on the market today will will expect a checksum with the barcode. ![]() If so, a barcode with only three characters will not scan. By default, many scanners require a barcode to encode at least four characters.A space (the so called "quiet zone") of at least five to ten millimeters should be left around the code. the width of the narrowest bar) should not beīelow 0.3 mm. Sure that the code is not printed too small. For Code 128, a resolution of 150-200dpi or higher is recommended. Make sure that the code symbology Code 128 is actually activated in the barcode scanner. ![]() I have printed a Code 128 barcode but my scanner doesn't read or scan it
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