What would be a good practice if one had a separate computer an OS running in RAM to double check the SD card and file contained within was the only thing on the card?

jennann

Thanks. The article implies that as long as the wallet software is doing its job of sanitizing input, air-gapping doesn't add much security​. However, software can have vulnerabilities, and an air gap can be a fail-safe in the case of an undiscovered software bug.

bitcoin

Most secure hardware wallets that maintain a true airgap via at least QR code?

Of course this is probably biased but maybe its worth a read for you:

https://bitbox.swiss/blog/does-airgap-make-bitcoin-hardware-wallets-more-secure/
