https://etakorea.net/
KETA, or the Korea Electronic Travel Authorization, is an online system that allows eligible travelers to apply for entry into South Korea without needing to visit a consulate or embassy. It is an essential document for short-term travelers who intend to visit South Korea for tourism, business, or other purposes for less than 90 days. The system is designed to replace the cumbersome process of applying for a traditional visa for certain nationals, simplifying the process and encouraging more international tourism.