The underground space of Taipei Main Station is complex like a huge maze, and an average of 540,000 passengers pass by daily. Department of Transportation of Taipei City Government applies smart city technology to improve the indoor wayfinding problem. Besides, this Taipei smart station project includes 5 station service items, wayfinding guidance system (Kiosk), indoor position and navigation application, tourism and transportation information, life safety monitoring system, and intelligent parking system. There are 6 railway stations, 4 underground streets, 2 parking lots, and 1 integrated bus station. Among the items, the App (named Taipei Main Station Navigator) applies Bluetooth technology (Beacon) for indoor positioning and is able for users to look up for public transportation around Taipei, search shopping and food information in the station, smart parking functions for nearby parking lots, and receive notification messages.