1. Fraunhofer researchers are developing a system using light to transmit data in hospitals and industrial settings, combining it with existing power and 5G networks to create cost-effective wireless networks. 2. The technology, known as LiFi, offers robust and powerful data transmission with low latency and high speeds, and is secure against eavesdropping. 3. This innovation aims to enhance digitalization and technological sovereignty in Germany, supported by the Federal Ministry for Economic Affairs and Climate Action.