> Because with a phone alone they need to store their keys locally. With re-keyed notes (or notes from family members who have re-keyed them), they can immediat

> Because with a phone alone they need to store their keys locally. With re-keyed notes (or notes from family members who have re-keyed them), they can immediately store notes in a safe place without the problem of phone hacks or loss. In a safe place, like a wallet? This seems dramatic unnecessary. You can lose cash. And it’s measurable how much easier it is to lose paper money compared to a phone. Hard cash went electronic. Why would electronic cash go hard?