If you lose your device it's a problem, but at least you don't need a local cell phone plan. (I'm almost locked out of my Canadian bank because it won't accept international phone numbers for 2FA.)
If you know this will be a problem you can enrol with TOTP, using an app but also writing down the initialisation code or printing out the QR code.
This is almost the same as having 2FA recovery codes written down somewhere.
A secure version of luggage deposit, but just for small things. We used to have safe deposit boxes at banks, though it doesn't need to be that secure. The key limitation is that the client can't travel far, and they have to be able to open it based on a matching photo, not an identity card.
Yep, but the issue (in the specific case of the homeless) is that the devices (and the - let's call it "optional" - SIM/local cell phone number) are lost/stolen, the written down emergency/recovery codes may work IF the other idea (luggage deposit) is implemented, let's call it EPBD (Essential Personal Belongings Deposit).
If you know this will be a problem you can enrol with TOTP, using an app but also writing down the initialisation code or printing out the QR code.
This is almost the same as having 2FA recovery codes written down somewhere.
A secure version of luggage deposit, but just for small things. We used to have safe deposit boxes at banks, though it doesn't need to be that secure. The key limitation is that the client can't travel far, and they have to be able to open it based on a matching photo, not an identity card.