Hi,
Yes, I saw some ideas, member Yosoypepo tried to make it with relays, I saw it on one webpage.
I have attached one schematic, it's on Spanish, but it was easy to translate it to English.
Problem here is that wires should be laid from interior light all the way to fog lights, to make additional power supply for fog lights.
Good thing is that it's connected to ignition key, so fog lights wouldn't light when ignition is on, and doors are open (interior light is also on with open doors).
I also saw some additional modules, with extra remote control, but that's too much, I don't need this function so much to have one extra remote controler on my key chain 8)
I have an "old" model od i30, so there is probably no option for software modification. Also, as it would probably fork with low beam lights, and I plan to install HID, it wouldn't be a good option to turn them on so many times, without car running.
I would like to make it only by attaching to wires under the wheel, using some relays. It would be easiest way, and maybe the most practical way.