@TomF@mastodon.gamedev.place@ve7fim@mastodon.social Nintendo tried to do a similar thing with the Famicom floppy, which had switches to detect that the word Nintendo was embossed with the letters at certain depths, though third party manufacturers were able to work out abstract shapes that also worked.
@tubetime@mastodon.social I do remember that year or so when SEDs were going to be the hot new display technology and we were all going to get separate CRTs for all of our subpixels