Mobile Passport Control represents the US Customs and Border Protection's digital modernization initiative for entry processing. This official government application allows eligible travelers to submit passport information and inspection questions electronically before reaching CBP officers, functioning as a digital alternative to paper declaration forms. The app occupies a unique position in the travel technology market as the only officially sanctioned mobile solution for US entry documentation. The application's core functionality centers on four key components: travel information collection, CBP inspection questionnaire completion, passenger photo capture, and digital receipt generation. Users input passport details for all traveling group members, answer standard customs declaration questions regarding items being brought into the country, and capture photographs that meet CBP specifications. Upon submission, the application generates a digital receipt with QR code that travelers present to CBP officers at designated MPC lanes. This process eliminates the need for paper forms and redundant data entry at inspection stations. User experience demonstrates notable efficiency gains in real-world scenarios. Travelers arriving at participating airports proceed directly to dedicated MPC lanes where CBP officers scan the digital receipt QR codes. Multiple user reports indicate processing times reduced from 30-45 minutes in standard lines to under 5 minutes using MPC. The interface maintains government-grade security standards while remaining accessible to travelers with varying technical proficiency. The photo capture feature includes guidance for proper framing and lighting to ensure CBP acceptance. User feedback consistently highlights dramatic time savings and streamlined processing. JennRiv (August 24, 2025) reported 'Simple, Quick, and Easy' experience for family arrival from London, while Joyizcute (August 24, 2025) documented bypassing '2 flights worth of passengers' in regular lines at DFW. Multiple reviews from September 2025, including Jezebella Marie and Bzeman12, emphasize the 'super fast' paperless process. The 4.9/5 rating reflects overwhelming satisfaction with time reduction capabilities. The application's primary strength lies in its official CBP endorsement and significant time reduction at entry points. Limitations include availability at only select airports and exclusion of certain traveler categories. The app cannot replace physical passport requirements and functions solely as a documentation pre-clearance tool. Ideal for frequent international travelers seeking to minimize airport processing time without Global Entry program investment.