💣 Self-Destruct Note
A demo of the "seal it, reveal it once" UX pattern — entirely inside this one browser tab.
This is a same-tab, same-session demo — not a way to send a secret to anyone else.
The note is held only in a JavaScript variable in this page's memory. There is no server, no storage (no localStorage/sessionStorage/cookies), and no network transmission at all — that's the point, and also the limitation: nobody else can ever see it, because it never leaves this tab. Reloading this page loses it. Closing the tab loses it. It is useful for things like briefly hiding a password you just generated from someone glancing at your screen — it is not a way to share a secret with another person or device.