Barcode Scanner and write to Excel

Scanning the barcode is the easy task. Do you want to write to an existing document (where in doc ? - Excel files format is really complex) or create a new one. You could write to a file (in SYLK format for instance) and import this in Excel doc.

I want to write to an existing excel document stored in web (Hidrive). I want to use it as an inventory app.

If i get a barcode reader working, you said its the easy part, and i have the plain text how could i send information to excel?

Would it maybe be possible with Data Streamer Add In?

You should read this old thread, which confirms what I told you: writing directly to an Excel file is overly complex. Not advised to try…

https://developer.apple.com/forums/thread/23656

However, here is a parser https://github.com/CoreOffice/CoreXLSX

or code to modify an empty file https://stackoverflow.com/questions/40403322/writing-data-from-tableview-to-excel-using-swift