When leaving Japan, you do not go through a "customs" inspection in the traditional sense of searching your bags for goods, but you must pass through Immigration and a specific Customs declaration kiosk for specialized items. At Japanese airports, you first pass through security, and then you will encounter a Customs counter or an automated kiosk. If you purchased "Tax-Free" goods during your trip, you are required to scan your passport at these kiosks so the National Tax Agency can verify your exports; you should have your receipts ready, though they are now handled digitally. Following this, you proceed to the Immigration booths where your passport is stamped or scanned (often via automated gates for residents and certain visa holders) to record your departure. While the process is highly efficient in 2026, it is vital to remember that you must still follow export laws regarding currency (declaring amounts over 1 million Yen) and prohibited items. The "Customs" check upon departure is primarily an administrative step to ensure tax compliance and legal exit.