When boarding the train at an unmanned station, the passenger is required to pass it through the card reader only upon boarding for the first time, but when getting off the train at an unmanned station each passenger is required to pass it through the card reader.
無人駅での乗車時には最初の乗車時以外カードリーダーに通す必要はないが、無人駅での下車時には必ずカードリーダーに通す必要がある。