On the electronic declaration terminal at the customs inspection area in the airport, the “Declaration of Personal Effects and Unaccompanied Articles” can be electronically submitted by scanning the QR code that this app makes.
The app. is able to work off-line once it is successfully downloaded, and therefore customs procesures can be smoothly implemented wiht the QR code prepared in advance.
Available Airport Terminal;
Narita International Airport Terminal 3
Please refer to the website of Japan Customs for the start date