> >[Courtesy of SK Telecom]SEOUL -- SK Telecom, a top mobile carrier in South Korea, released a smartphone service that provides information about the level of congestion in subway trains by using big data collected from subway stations and trains to help commuters reduce the chance of contacting coronavirus carriers.About 7.2 million people use subway trains during commuting hours every day in Seoul and its satellite cities. To avoid cross-contamination inside crowded subway cars, all commuters wear masks and use hand sanitizers to fight their way to work and back home.SK Telecom (SKT)... READ MORE