Been working on an idea for a little while, and I just published it...
Neat! I had a similar idea but yours looks way cooler.
in the end it always comes down to the fact that if you give someone the private key to etch/engrave/print, it's not secure
. Hard to imagine a way around this before 3d printers take off.
No, there's
a way around that. It doesn't not look nearly as cool, but I didn't have to buy a laser engraver or trust the dude who operated it.