Description
B PASS was an innovative service built on blockchain-based decentralized identity (DID) technology, designed to securely protect personal information while managing the digital identity of Busan citizens, including a digital Busan citizen ID (부산시민증). During its operation, B PASS was an early adopter of an AI chatbot powered by large language models (LLM) and Retrieval-Augmented Generation (RAG) technology, enabling real-time search and analysis of B PASS-related materials to provide fast and accurate user support. As of December 2025, the standalone B PASS app service was discontinued, and its Busan citizen ID and public service functions were integrated into the 'Busan Is Good Dongbaekjeon' (부산이즈굿 동백전) app under its Citizen Platform, continuing B PASS's technology under a new app.