CONCLUSION
We proposed a system to control lighting for LED-based illumination. The main idea is to send control commands from
a smartphone without requesting the user to check the ID of a target LED as if the commands were sent directly. To realize such an interaction, we investigated an LED unit coupled with a light sensor. The user spots a target unit for controlling with the backside light of a smartphone and sends commands through the terminal’s UI. The acceptance of the system in the usability was implied through a user study.