Blockstream Jade's camera allows for fully air-gapped communications with a companion app, meaning that no USB or Bluetooth connection is required. This allows users to have physical control over when data is sent or received, which can provide an improvement in security. Note: This functionality is available for Jade firmware versions 0.1.45 and above. If you need to upgrade and prefer to keep your private keys 100% air-gapped, users can factory reset their Jade before upgrading and afterwards restore their recovery phrase in an air-gapped manner. Setup Jade with QR Codes 1. Download a compatible wallet app that supports QR communications then follow Jade's advanced set up guide. Create a SeedQR if desired then select QR when prompted for your connection type and choose whether to set a PIN or use Jade solely with your SeedQR. Tip: Nunchuk (mobile) and Specter (desktop) are recommended QR companion apps as they provide some key optimizations for QR users. 2. Depending on your preferences during set up, you will now have one of the following paths for accessing a wallet on your Jade fully air-gapped: Uninitialized: Power on Jade, Scan SeedQR Initialized: Power on Jade, QR Mode, QR PIN Unlock or Scan SeedQR Tip: If your Jade is already initialized and you need to create a SeedQR, you will be prompted to create one after typing your seed phrase when visiting Options -> Temporary Signer from your Jade when it is in an inactive state. Next: Add Jade to a QR supported app
