This site should have a lost and found page.
Or...What do you if you loose everything?
Because thats what just happend to me and it sucks.
My entire purse was stolen on Saturday night and now I have nothing.
I am going to the cell phone store tomorrow because apparently they can find your phone using GPS. BUT... I'm not sure if it will work since my phone is dead. I'll let you know.
Also found, if you loose your ARC card you need to bring your passport and fill out an application form at immigration and pay 10,000 won.
I also tried the subway lost and found. Located at Seomyeon station Line 1, underground 2nd floor. Open weekdays 9am-7pm. Phone: 010-640-7339
It was also suggested to file a police report, so I did that as well. Phone number to Busan Provincial Police Agency: 051-851-0112
So, how about it? Start a lost and found page!