They're floppy disk flux readers and writers used in digital
preservation and can be broadly considered to be "analyzers" of magnetic
fluxes.
This will have the intended side-effect of giving access to the device
to users at the console, obsoleting:
https://github.com/keirf/greaseweazle/blob/master/scripts/49-greaseweazle.rules
Procotol analyzers are external devices used to capture traffic over a
wire so that it could be analysed. End-users at the console should be
able to access those devices without requiring root access.
This change obsoletes the need to install Total Phase's "Linux drivers",
which are really just udev rules and hotplug usermap files to do that:
https://www.totalphase.com/products/usb-drivers-linux/
