Hey devs working on matrix apps, if your app doesn't support encryption and device cross-signing (yet), you might as well only show unencrypted rooms in your UI (or grey out the encrypted ones). Obviously the app would need to offer a prominent explanation during setup for why that's going to happen, and maybe a note somewhere in the UI too, in case users get confused. Filling the UI with unreadable rooms is a poor #UX I've seen all too often.
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