- The Last Command abridged audiobook (Mentioned only)
The D/Square Decoder was a decryption and deciphering system used in military and police databanks, as well as Imperial Ubiqtorate bases. It was designed and manufactured by Fedukowski.
Appearances
- Vision of the Future (and unabridged audiobook) (First appearance, in book)
- Vision of the Future abridged audiobook
Sources
In other languages