As Nairobi’s population surges past 5 млн., the city is embracing RFID-based smart bus ticketing to reduce cash handling, curb revenue leakage, and improve passenger experience. This article explores the technical backbone of contactless fare collection in East Africa, from MIFARE chip selection to multi-modal integration. It covers industry drivers, key specifications, deployment challenges, and practical selection guidance for transport authorities and system integrators. With insights on card durability, reader performance, and interoperability, it serves as a comprehensive resource for anyone planning or upgrading urban transit RFID systems in Kenya and beyond.