How to buy a Lambo with Parman gear. Detailed flow, please enjoy... Open ParmanodL laptop and log in. Open Sparrow or electrum wallet (connected already to internal Bitcoin node). Make a transaction with the wallet to buy Lambo. Export transaction to QR code on screen. Open ParmAirGap laptop (has private keys), enter disk encryption password, and then log in, and open electrum/sparrow wallet. Do "import transaction by QR", and point laptop's webcam to ParmanodL laptop screen, which is showing QR. Transaction captured on ParmAirGap; click sign, and enter password to approve. Export signed tx to QR in screen. On ParmanodL laptop, import Tx by QR option. Point camera to ParmAirGap screen. Signed Tx captured. Click broadcast. Valid Tx goes to own node mempool and shared with other Bitcoin nodes. Tx gets mined, and node updates latest block. Wallet recognises payment. Lambo dealer's wallet sees payment also, and delivers Lambo to your home. Wife sees lambo in driveway and gets mad.