great post Mike ππΌπͺπΌππΌ. i'm interested in teasing this out a little further - "until we have ubiquitous cross platform key management devices" - what would this look like in practise?
Predicting the future has had a100% failure rate since the dawn of mankind. That said, the seedsigner project seems to be a good early step, so perhaps something like a small hardware device with a camera and biometric capability like a thumb print reader. But using occam's razor, I guarantee that prediction is wrong π