didn't read this thread, but are you referring to nsecBunker, nostr:npub1ujsax5qggxkmvu6gwht9c30p0w2df56akngj3hfg3j3cr7daejgq2nnzxc ?

I recorded this poor-man-demo video this morning:

https://pablof7z.com/images/nsec.mov

after publishing this note:

nostr:note1hvys0eq2c9jwrz6sqwvqznmzwaa2hnsf4lg4rfq49ftxzrtwgnesxzqur0