[Coco] wikipedia entry on "floppy disk hardware emulator"

[Robert Hermanek]

So I was looking at the Wikipedia entry for "floppy disk" for fun, and they have a section about devices that mimic a floppy disk, and it links to this entry.  It's on wikipedia, so pretty safe I think:

http://en.wikipedia.org/wiki/Floppy_disk_hardware_emulator

I guess my question is, is this a joke or hoax?  There are no models mentioned, google searches come up pretty blank.  If you look at the photo of the circuit board, it appears the tops of the chips have been blacked out, not sure why they would do that if this were legit.  Anyone aware of a device along the lines that the great and powerful wikipedia says may exist?  

If so it would be kind of fun to be able to plug it directly into a coco disk controller like you can other 3 1/2 drives...