The best security is openness
FoundationDevices believes that the best security is openness, not secrecy. Passport and the Envoy mobile app are open source — all software, hardware, and other components are open and auditable. There is no hidden code or restricted information.
Security
Passport 2 has no USB ports or communication modules. The wallet uses AirGapped technology, so you can simply scan a QR code to make a transaction. This interaction model ensures that you know exactly what information Passport is receiving, and makes it much more difficult for potential attackers to interact with the device.
Passport 2 Hardware Wallet for Bitcoin