How should dehydrated devices be shown to the user?

[reivilibre]

Dehydrated devices are a little bit different from a normal device, that they might warrant special treatment.

But hiding from the user does not seem like the optimal solution, because having a dehydrated device on your account that you're not aware of, is a potential security concern.

See also: element-hq/element-web#29264

[mxandreas]

@reivilibre @dkasak We're discussing just now how to show the offline/dehydrated device in EW. Current winning idea seems to be to show it somewhere under the Encryption settings (as it is really there because of E2EE), rather than a specially decorated device/session. But there are some pros and cons to both approaches.

First question is - as the client(s) have to show this information anyway, because MAS may not be used, does MAS actually have to show it at all.

If MAS has to show this, then the issue is that MAS probably has no better place than to present this as a specially decorated device, which may create inconsistency with where the client shows it.

cc: @richvdh @americanrefugee