This reminds me of the VMU on Dreamcast. It was a memory unit with a built in monochrome screen. When 'docked' in the controller it would show extra information about the game you are playing. As well as saving games, you could also download minigames that could be played solely on the VMU. Some of them let you play with friends by connecting two VMUs together (no cables needed, the connector is half male half female so two connect together) - although supposedly I was the only person in the world with a Dreamcast, as all my friends at school had PS1.<p><a href="https://venturebeat.com/2009/09/12/the-best-dreamcast-vmu-games/" rel="nofollow">https://venturebeat.com/2009/09/12/the-best-dreamcast-vmu-ga...</a>
This is brilliant. I love when people find unused features or weird implementation details in things.<p>Also kind of jarring how this is the first bit of "retro" tech that I have seen a reverse engineering post on that I actually used when it was new..
Tsss... Nintendo :p<p>> Curiously, at the time it came out, a study deemed the PokéWalker one of the best pedometers available at the time.<p>I still remember the "Duck hunt gun" on the Super Nintendo which was widely interesting.<p><a href="https://www.mentalfloss.com/article/26875/how-did-duck-hunt-gun-work" rel="nofollow">https://www.mentalfloss.com/article/26875/how-did-duck-hunt-...</a><p>(couldn't find the original source of that information though)