Do sensors operate like NPC scanners i.e.: via infra-red and if so, how "cold" does my ship need to be to drop from another ship's sensors? I have observed CMDR Obsidian Ant using this technique against NPCs in a YouTube video, turning off modules to drop his heat signature to below 30% which appears to work against NPCs but what about against human piloted vessels? If my heat percentage is below 30% will my ship be invisible to the sensors of other ships?