There is so much info and it is all so different. They say that half of the world’s wifi access points are in Korea! Anyway there seem to be the following options.
-
Use the endless free access points or
-
Use a Korea Telecom 3,000 won per hour pre paid card that you can only purchase at Seoul airport, but the login software does not work on my computer, or
-
Use a Internet Bung (cafe).
It sounds like the best plan is to see what free access there is and if there is none use a Bung.