After you'd left

Let your character speak even long after you'd left

We see in the dark
We see through walls
& back in time
CHARACTERS are more like thermal signatures
In case you acted wrongly in an ENVIRONMENT. Thermal imaging equipment can detect them long after you'd left

I see useless people forming like they're essentials of life
Let your signatures speak after leaving a place or set of people

It is a must that we exit a place or position, even on earth we can't parade forever.