Posted on 07/14/2014 4:27:06 PM PDT by nickcarraway
Years ago the AF had a program, TEMPEST, that was concerned with electro magnetic waves given off by IBM electric typewriters. If you were going to use one of these typewriters for typing something classified not only did you need to secure the ribbon but the typewriter itself had to be TEMPEST shielded.
Typewriters have lots of built-in fonts -- just ask Dan Rather.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.