On Mon, 4 Mar 2002, Ben Franchuk wrote:
You are right ... use 6 bit ascii characters.
I remember a fellow in the late 70s who told me that he put a hidden
copyright message, AND SOME COMMENTS, in his executable file in Morse code
in NOPs. Although Tony won't have room in his firmware, it did at least
meet the fundamental requirement of being obfuscated to the point that
few would realize they were there.