i had a concept once 6+ years ago that went something like this-
each household member had a sort of RFID bracelet or other object. they would take it around with them in the house, and it would interact with a network to turn the lights on to your preferences wherever you were.
you could conceivably make personal setting as well, so perhaps you enjoyed more dim lights watching tv, or lights of a particular color, the system would act accordingly.
the system would also have some sort of settings to know what to do if there was more than one person in a room, and had conflicting settings.
the bracelet/object could also function as some sort of remote to adjust the lighting quality manually should you so desire.
with a system like this, you wouldnt have to worry about turning lights on and off, as it would “follow” you around. if the object was indiscrete enough, you would forget, any more than you forget your house keys when you go out.
i never went with the concept, and for sure there are some issues, technical and otherwise, but seems basically feasible to me. with all the different wireless tech out there (RFID, bluetooth, wifi, etc.) im sure the system could be effectively made, and perhaps could even be compatible in a basic retrofit if you just changed the swtiches.
I do know there are remote control lighting systems out there, and programmable “smart” systems. this just would really combine the two into something that doesnt yet exist (to my knowledge).
(if you make it and get rich, you owe me royalties:) )