Momentum is building behind light communications technology both as an alternative to, and complement for, radio frequency technologies (RF) such as WiFi and cellular. This has culminated in formation of the Light Communications Alliance (LCA) focusing on promoting the technology and developing standards for a variety of use cases, including various Internet of Things domains but also video distribution in the home. This is reflected in the identity of the founders, including Nokia, Orange and Liberty Global alongside a few specialist bodies such as the Lifi Research & Development Centre. Lifi is one of the options for light communications and one that has got some analysts overexcited. The whole field of light communications (LC), sometimes referred to as optical wireless…