moonlight

I choose 1 and either learn echolocation, or get a fancy implant that does it for me.

Although if 1 is instantaneous and you have perfect control of the power, you could probably avoid others seeing you by flickering really fast. I bet there’s an optimal pulse width and frequency where you would be effectively invisible to people while still being able to see enough. A high speed camera would still catch you though.

Whoa, I’d really like to try that.