I just spent some time searching the internet for jewelers that sell small titanium dog tags with engraved QR codes. It's funny that I have gone full circle and coincidentally ended up back at the bitcoin forum.

I think the 1" stainless steel safe is a great idea and plan on making a purchase. I have one question though. Do you plan on or can you offer safes in any other materials like titanium or tungsten carbide?

Personally, a 1" titanium pendant with a titanium bail would be perfect. Maybe with encrypted private key on one side and plain QR code of bitcoin address on other