I live in the dark but shine without flame. I vanish when you name me. What am I?

The symbol above is not zero. It hides what?
[Hint] It aims, but is not a weapon.
There is no input this time. Find what to click.
“It is not in the question. It is in the silence.”
.
Vault AI: Pattern matches < 2% of solvers. Proceed if you accept the consequences.
[Hint] The dot is clickable.
ACCESS GRANTED
Codex channel opened…
But the Vault does not reveal its secrets to all… Try again in another lifetime.