Nostr Web Client

You can use Bluetooth if you want

But if you want fully air gapped transactions, you have to do it via QR codes and without any USB or Bluetooth connection

About the battery. It’s charging now so I don’t know yet how long it will survive without charging

But you could still use it without charging if you really need to? (imagine being in a desert and having to make a transaction 🤣)

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I mean simple USB connection

Yes, you can

Oh yeah! Just have to charge the battery and it’ll work without USB