It’s an NFC card so it can be used for your npub or as a Bolt Card. Just figuring out a couple of details like pricing and it should be available for sale shortly.

Now available to buy. https://lasereyes.cards/buy-now/nostrcard

So there isn't actually an encrypted nsec on it? Meh. Why not get some JavaCards and put an actual nsec on it so that you can use it to digitally sign things. "PGP cards" like this exist and the necessary Java applet is floating around there somewhere.