Unfortunately I don't think that will achieve what we are looking for. The statement in that link says, "Hardware Station is used by Modern POS and Cloud POS to connect to hardware peripherals, such as printers, cash drawers, scanners, and payment terminals."
In this case, we cannot use MPOS or CPOS for the specific purpose we have, but instead we are building our own companion app but would like to leverage the Commerce APIs. As such, we need to register the application as a POS with Commerce.