nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl is the ONLY Bitcoin Cold Storage Device solution available globally, TODAY.
In 2013 there were only 1.2million Rpis in existence.
Today there is over 40million pi computers around the world, supporting STEM learning in over 100 countries.