It was weird, the kiosks are open for anyone to attempt to use, but not everyone is able to. For a while people were just kinda going where they felt like, then after a half hour or so someone came and directed the lines. When I asked about the kiosks, the girl working the line asked what airline I flew in on then said "okay, that flight can use them". I'd guess it's dependant on the departure airport, and which country it came from, but just a guess.