This is not necessarily true. The fonts are chosen by the people who do the barcodes themselves. It may be a general font, or it may be a font that is designed or downloaded by oneself. Generally, outsiders cannot read it. If it is a barcode type, it can be detected

After this website identifies the barcode type and data, you can use the same data to create an identical barcode in the Zhonglang software

As shown in the picture below, the font can also be adjusted through the font tool in the upper left corner of the software or the font tool in the "Text" window of the graphic properties