Smart City

Smart cities use IoT, AI, and big data to optimize transportation, energy, government, healthcare, and disaster management. QR codes serve as low-cost citizen interfaces across these domains.

Transportation: bus stop QR codes show real-time schedules. Government: facility QR codes enable reservations and service applications. Tourism: multilingual guides and AR via QR codes. Disaster preparedness: shelter QR codes display real-time capacity and supply status.

QR codes' advantage in smart cities is minimal infrastructure cost - stickers create information access points without expensive sensors or digital signage. Cities like Shenzhen, Ahmedabad, and Tallinn actively use QR codes as smart city foundation technology.