Jeonju City's visitor guide explains that riders tap their transit card when boarding through the front door and tap it again at the rear door before getting off.
After a recorded tap-out, the city describes up to two free transfers onto another Jeonju city-bus route within 30 minutes of alighting. Forgetting to tap out can forfeit the transfer benefit and may trigger extra fare later.
Check real-time bus services with the Jeonju traffic information center, and follow the current operator fare rules.