Researchers at the Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH) of Berlin, Germany, and the Institute of Photonics at University of Strathclyde and the LiFi Research and Development Centre at University of Cambridge in the UK, have transmitted data at up to 1.5Gbps using novel far-UVC LEDs. Developed at FBH, the devices set a record for wireless optical communication at wavelengths below 235nm.