I imagine it like a treasure box with a key.
5 minute setup:
1. Plug it into your starlink internet connection
2. Use key to display QR
3. Connect with phone app
4. Hide the key in a safe place
Phone app allows instant access to spending wallet (LN + ecash) and read-only access to savings wallet (optional/password protected). You need the physical key/backup to touch savings account.
Maybe there's multiple wallets for the family...