2011, retailer Homeplus opened the world's first virtual supermarket at Seolleung station, where smartphone users can photograph the bar code of life-size pictures, on the walls and platform screen doors, of 500 items of food, toiletries, electronics etc., for delivery within the same day. Stations Main Line Seongsu Branch Sinjeong Branch Extension There is a possible extension currently in the conception stage to extend the Sinjeong Branch to 3.7 km to Gayang Station on Line 9. The path would include a new station named Gangseo-gu Office in between Kkachisan and Gayang. Route map See also Subways in South Korea Seoul Metropolitan Subway References External links Seoul Metro Map, station and route finder Seoul Metropolitan Subway lines Railway loop lines Railway lines opened in 1980 1980 establishments in South Korea