The 여행자 세관신고 app enhances the customs declaration process for travelers by offering several user-friendly features. It allows users to automatically input personal information into their declaration forms by scanning their passports, eliminating the hassle of manual entry. The app also supports offline form completion in four languages—Korean, English, Chinese, and Japanese—enabling travelers to fill out their declarations at their convenience before reaching the airport.

In addition to simplifying the declaration process, the app provides a tax estimation feature that calculates potential customs duties based on the items purchased. This feature uses an algorithm that incorporates various tax rates and exemption rules, ensuring users are informed of their potential liabilities. Furthermore, the app includes a QR code function for expedited customs clearance, allowing travelers who have accurately declared their items to pass through customs quickly without the need for physical inspections.