They don’t just have Korean karaoke, but also Korean purikura. The machines look exactly the same as the ones in Japan, only all the writing is in hangul, obviously. We did our thing in the purikura booth and this was the result:
Unfortunately, the machines don’t send the digital originals to your cell phone, so we had to make due with a scan of our pictures sent to our computers, which is better than nothing of course. The pictures were then laminated and divided so we all had some to put in our wallet afterwards.