Passwords/logins are relatively straightforward to share but how do you share an account that requires a phone number? Both of us can't have the same phone number and even mapping it to an "office/2FA dongle" phone is a bit inconvenient.<p>The issue isn't so much trust as it is about transparency and survivability (i.e. if something happens to one person, the other founders can still have access).
Twilio account with N logins; use it to receive the verification SMS messages. (You can do something mildly clever and split them in real time to both phones but easier just to send them to a vacuous script and get them from the logs in the Twilio dashboard.)<p>This doesn't work everywhere but my experience is Twilio numbers pass verification ~80% of the time for the set of services I use them on.