OttersMeep

Allow a compass as a gui upgrade slot? Then call turtle.compass(), which would return degrees away from north EDIT: Lupus590 is correct, it was already suggested. However, what I meant...

perhaps a basic whistle chip in the pocket computers, and regular computers that can play a tone at a fixed hertz (eg: 500 HZ)

Well, maybe integrate into the printer as said in the original post? Perhaps `printer.scan()` in the printer API? Which would allow you to put a page into the printer using...

maybe add a config value for how many modem messages can be sent by one computer, and how many can be sent on a channel?