The "개인통관번호" app, developed by Jongwoon Song, is a free lifestyle tool for obtaining a unique identification number for customs clearance in South Korea. This unique identifier is crucial for secure overseas purchases, preventing the leakage of personal information. With a simple and swift application process integrated within the app, users can easily request and receive their personal customs clearance code.

For users concerned about the necessity of this unique code or the complexity of the application process, the app provides clear answers and guidance. Additionally, users can access FAQs within the app to address common inquiries and uncertainties regarding the personal customs clearance code.