Another interesting bit of history was the Seiko Message Watch, which had time-sync and one-watch messaging over an FM radio sideband:<p><a href="https://mako.cc/copyrighteous/tribute-to-the-seiko-messagewatch" rel="nofollow">https://mako.cc/copyrighteous/tribute-to-the-seiko-messagewa...</a><p>Back before cell phones were ubiquitous that was pretty novel. I remember being struck by how cool it was to step off the plane in Taipei and see it update to local time while I watched. Getting pages about server downtime using the email gateway was also a nice way not to lug a pager around.<p>The system didn't outlive Y2K, however, and since it was clear where the market was going they simply shut it down rather than fix the Y2K bugs.