When the ticket gate says no: fare adjustment machines and other quiet fixes

Sooner or later the gate's flap snaps shut, a chime sounds, and the queue behind you pauses. It rarely means you did anything wrong, and it is usually fixed within a minute if you know which machine to walk to.

Why the gate stops you

Three causes account for most refusals. The balance on your IC card is lower than the fare, or the card has no record of where you tapped in, or your trip crossed the border between two rail companies' IC areas, which the system cannot always price as one journey. The gate's small screen usually tells you which, often in English.

The yellow machine before the exit

Just inside most ticket gates stands a fare adjustment machine, signed 精算機 (seisanki) or Fare Adjustment, usually in yellow. Insert or touch your card and it shows the shortfall in yen. Pay the difference, take the card back, and tap through the same gate. Many of these machines take only cash, so keep a few coins for exactly this moment.

不足額を精算してから、もう一度タッチしてください。

When the staffed window is better

At the end of the gate row is a staffed booth, the 有人改札 (yūjin kaisatsu). Go there if the machine cannot read your card, if you forgot to tap in, or if your route crossed an IC boundary. Tell the attendant where you boarded. They will take the fare and clear the card's record so it works on your next ride, rather than failing again the following morning.

Habits that prevent it

Keep at least ¥2,000 on the card before a day of transfers, and glance at the remaining balance on the gate display each time you exit. For long local-train trips, ask at the ticket office whether the route stays within one IC area. If it does not, a paper ticket bought at the start is simpler than settling up at the far end.