This reminds of back in the olden days (when SMS MFA was still an "OK" thing to do) we needed shared MFA for IT Admins of various SaaS apps. We setup a dedicated phone, duct taped to the wall, to get these codes and push them to hipchat (via Tasker & NodeJS).

One of my team members did a write up about it years ago: https://obviate.io/2015/04/16/making-of-the-mfa-phone-becaus...