Let us say you have OpenPGP card, or a javacard with the SmartPGP Applet (or hell, maybe even an implant). Let's say for the sake of argument that you have somehow lost your public key and that you foolishly didn't spread it to every GPG server on the internet.

How do you recover? Shouldn't it be on your smartcard somehow? The answer is... YES! Kinda.

Let us say you have OpenPGP card, or a javacard with the SmartPGP Applet (or hell, maybe even an implant), and you want to use it with your fancy LUKS encrypted battlestation (specifically, your root partition). It sounds like it should be possible, right? Well... yes, but it's not as straightforward as you might think. A quick web search will lead you to a lot of information, most of it not really getting anywhere concrete (much like this introduction).