I must disagree, it is much like fight club would lead you to believe.

A friend passed out in a tub (very drunk) years ago with a teeny tiny diluted drop of the stuff in it. It straight up burned a hole in him.

No switch to be flipped. Already used that way.

Atlanta has them in the middle of parks too far from and facing away from parking lots to read any license plates… they’re there to use facial recognition on children playing on park equipment.