It’s a kit like the Vorons and not a pre built machine, but it’s finished and is shipping.

Have you seen the Positron printer? Fits in a filament box when it’s folded up, and takes just a few minutes to assemble. It’s a very cool design.

Mozilla’s Persona protocol/service could have been this, but it failed to get traction and they abandoned it. Maybe it was an idea that was just too early. Decentralized auth is a really hard problem.