One features that Threema has is that you can see that you have verified the other persons key. I think Signal should have that too. If the other person reinsta

One features that Threema has is that you can see that you have verified the other persons key. I think Signal should have that too. If the other person reinstalls you just drop down back to a lower trust level. Threema does it with 3 dots red, orange ad green, but other versions of this might be experented with.