Very interesting idea. Seems like it's very early in the crowdfunding journey though. Mostly just ideas and a prototype at this stage, with some good partners.
it's a neat product. I love keyboards, and I love e-ink; but I think 'minimal' is a misnomer.
Why?
Hard to build, almost certainly.
But simple and minimal to use.
Jitterbug is already around for my humanist phones.