That way you end up with the same issues as we have now with SIM swapping: Post Office employees are not more reliable and not necessarily more careful with their credentials than people who can give you a new SIM card.

The post office does (did?) ID verification for first-time passport applications. I think that’s about as good as you can reasonably expect since it gets you a bona fide, universally-accepted proof of ID that would work anywhere else.

I would bet that the post office employees are a bit less susceptible to the “hurry up and hit your metrics” pressure than someone at the Verizon call center.

In another universe, the Post Office manages the email services, too. Sigh ...