The hackers are trying to sleep at BornHack 2023 but still some party people have forgotten you can't play music at 04:00 so it is your job to switch off the music so the hackers can sleep. You have some seconds until the hackers are getting angry and starts booing. So run (yes, in person) to the correct GPS coordinate and switch off the music.
When the hackers patient runs out, the game is over.