Here’s a puzzler for you: how do you securely send data from one airgapped computer to another? Sending it over a network is right out, because that’s the entire point of an airgap. A sneakernet is inherently insecure, and you shouldn’t overestimate the security of a station wagon filled with tapes. For his Hackaday Prize…

via Hackaday Prize Entry: Secure Storage on SD Cards — Hackaday