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Ratna Oy is a technology company focused on secure IoT applications using blockchains. Our solutions are created to grow the foundation for smart communities and applications of the future in the European smart city landscape.

Ratna Oy is a Finland based company designing field operation and access solutions for smart cities using IoT and blockchain technologies. The management team has a long corporate experience from mobile networking and physical access systems combined with an innovative and fresh development team. Ratna aims to provide a light and retrofittable machine-to-machine platform for space exploitation, waste management and smart traffic control in EU cities and municipalities characterized by combining smart devices for urban spaces, and light IoT gateways with true value transfer via smart contracts on private blockchains