Code-39

Code 39 can be to produced in different proportions: 2,0:1 and 3,0:1. This is the propotion between the thin and the thick lines of the code. As higher the proportion, the wider is the printed barcode with same contents, but even better is readability. ActiveBarcode always used the proportion 3,0:1.

Code 39 uses stars as a start and stop digit. These stars (*) are normally not shown in the text line below the code. But sometimes you can find a Code 39 with the "start/stop star" in the text line; in order to create this code do not have to enter the stars: If the text line shows *1234* you just have to enter 1234 because the stars are a fixed part of Code 39.