> "smart", Internet connected devices, especially smart homes.
I have a "smart" home (well, parts of it -- it's expensive to do everything!).
It turns on a few select lights when it gets dark out, unless there are already lights on (eg: we're home) in which case it doesn't change anything. It turns lights off late at night in case we forget. It turns the front lights on at 30% between dusk and midnight, and cranks to 100% anytime between dusk and dawn if there's motion or the garage door is open (then gradually puts them back to what they were). Most useful, there's buttons on the kitchen keypad labelled "Dim" "Bright" and "Off" that adjust the lights over the island, sink, table, and under-cabinet and range hood (all separate). Another useful one is the "all off" button by the front door -- there's no corresponding "all on" because (as mentioned above) that happens automatically, and we never walk into a dark house.
All of it can be controlled from any PC/tablet/phone, and of course all of it could be done over the internet -- except that I don't have any of the ports open, because I don't see the point. The ability of connected switches to be controlled by other switches/motion/time yet still allow manual operation is very nice, and it's significantly cheaper than a massive re-wiring project.
I hate that there's this huge craze that confuses "smart" with "on the internet". It's an entire industry that is a solution to a problem that doesn't exist.