Steve Portigal sent me a link about a Japanese system called the Symbiotic Hosting Online Jog Instrument (SHQJI). This product can…
measure a room’s environmental conditions (light, temperature, humidity, infrared radiation and ultrasonic waves) and detects the presence and movement of people, body temperature, and the nature of the activity in the room.
The data is communicated to a monitor in another room, and visualized in terms of coloured LEDs. I can see this being useful at businesses with a large number of walk-in customers. To me, this implies an assumption that the meanings of the colours will be commonly understood; another example of unconscious colour associations that are dependent on basic arousal.