[Tkinter] trace_add question

[Larz60+]

Code 128 is not as common as other Barcodes, so probably is not the default choice.
That's probably 'UPC-A' or 'UPC-E'.

What is the NETNUM Model name or number? is it this one? https://www.amazon.com/NETUM-Handheld-Ba...B01MRLRVCI

This one looks like 'No software needed ... Trust Us'. If you search google, a better manual, or at least a blog on the device might be available for download.

manual possibly here?: https://gzxlscan.com/barcode-scanner-user-manuals/