[Munemasa: A very old-fashioned company communication device, truly a relic.]
When infrared and ultraviolet rays are used for information transmission, they do not follow known network protocols. These are two separate communication systems.
In the network warehouse, when entering cyberspace, if there is equipment that can interact with these rays such as infrared probes and monitors, then there will be corresponding manifestations in cyberspace, with the rays becoming more apparent based on their intensity or the sensitivity of the observation instruments.
In a place like Rebirth Nightclub, filled with light pollution, this observation effect is not obvious, which means in cyberspace, this might be just slightly different from communication background noise.
Moreover, this type of signal transmission requires encryption using a very primitive communication cipher table, which not many human hackers can detect as abnormal.
