Trust like trusting someone writing you a cheque
Minibits (on my Android) has a nice feature whilst offline for sending sats in exact ecash denominations
Whilst offline (on my iOS) I’m using
wallet.cashu.me to scan qr code… it recognises it and sticks it in a queue for later… when I get online I can redeem it
If the sender hasn’t reverted it, or cancelled the cheque, not ideal but possible
Among a local community there would be more trust… I’m thinking in an extreme scenario
Then there’s interesting things such as this
offline.cash