As far as I know, you'll need to install the font on each client machine, but only if that machine will be printing barcode labels or otherwise displaying the data in barcode format. If you will only be scanning barcodes at that machine, you don't need the font to do that.
That is kind of what I had thought.
As a tangential thought: Can you think of a simple script to save font as image and store to container? (TimeSpent Vs.Impact may is mots likely an issue here so don't worry to much)
I will most likely end up doing the font installation
I'm not seriously suggesting this, but the simplest script that comes to mind would be using Insert From Device with FM Go to scan each barcode and insert the image into a container field during the scan.
Many years ago when I was using Macs, I could script FileMaker to enter preview mode, and copy would copy a Pict file to the clipboard of the current preview. That doesn't seem to work though in FileMaker 13 on Windows 7...
Hmmm, wonder if a system script can do a screen capture?
If so, you might use FileMaker to perform the system script (Apple script, windows command line, VBScript...)
and then Paste the screen capture into a container field.
But that seems like more work than installing the font on each computer that needs it.