What about giving him a steemit account somehow?
https://steemit.com/homeless/@bifilarcoil/what-if-we-could-give-homeless-people-a-steemit-account-somehow

This idea need more peoples ideas and feedback as there are many hurdles to take, but please talk about this with Mike and see if it is an option , and what it would take to get him on board this steem-ship.

If possible share your answers on my topic to inspire others to come up with options and eventual solutions

I'm adding this post on the newbieresteemday discord channel to try to have it boosted a bit.

Greetings to Mike all the way from Europe!