A public test network will be built in the Helsinki Metropolitan Area, which will enable the introduction of quantum encryption technologies. It will also offer Finnish companies a platform for developing and testing services and products based on quantum encryption. Quantum encryption is a new method based on quantum mechanics that enables secure data transfer in the era of quantum computers. In the future, the national quantum encryption network will be connected to the EU-wide network. The project led by VTT Technical Research Centre of Finland includes Suomen Erillisverkot Oy, Cinia Oy and CSC – IT Center for Science.