Real-Time Blockchain Identity Verification for Borderless Travel
Abstract
Due to increased globalization and international travel, there is a growing demand for secure and private identity verification systems at border entries. Reliance on databases controlled by only a few hinders quick, safe, and easy border crossings for travelers. The paper proposes a system utilizing blockchain technology that would enable individuals to verify their identities in real-time when traveling internationally. The system suggested for travelers utilizes selfsovereign identity technology, allowing them to manage their verified IDs on their devices through wallets based on blockchain technology. Once biometric details, such as facial recognition, fingerprints, and iris scans, are collected from each individual, they are linked together on the identical federated, permissioned blockchain by the nation's and border agencies. With the help of smart contracts, it is possible to control entry such that only approved agencies verify traveler documents, and zero-knowledge proofs ensure that only essential attributes about a person's identity are disclosed. Simulations prove that the system reduces verification time to under two seconds, significantly outperforming traditional systems, and prevents nearly 90% more identity fraud. Additionally, since blockchain is decentralized and secure, it ensures that audit records are transparent and there are no single points of failure. The work introduces a manageable and compatible system that enables people to travel more efficiently while facilitating collaboration between border officials and countries. The next step is to do significant pilot deployments, connect to current travel technology, and face rules and differences among countries and regions to make sure air (/land) mobility grows for everyone.