Air-gapped transactions

[Mandor]

Some hardware wallets only authenticate transactions, while others permit air-gapped use. I’m confused about air-gapped transactions—can you explain what they are and their main security advantages for Bitcoin?

[Mark]

Air-gapped transactions are like offline crypto transactions, and they are totally isolated from any kind of connection like internet, Bluetooth, or Wi-Fi.

You can do the transactions only through the private keys. It's best because it keeps your Bitcoin keys offline on your transactions. Your data is transferred through QR codes or SD cards.

All these features make it the most secure option for your Bitcoin, as there is no issue of online attack or scam.