ST Micro’s announcement of a secure microcontroller for wireless charging underlines the rising profile of that sector for a growing range of mobile systems, from phones to IoT devices. The failure of rechargeable battery technology to keep up with rising energy demands from ever more power-hungry devices has elevated the wireless charging field dramatically over the last decade. Although dating back to invention of electromagnetic induction by English scientist Michael Faraday in 1831 and pioneered in experiments by Nikola Tesla around the end of the 19th century, it is only the arrival of mass mobile communication and electric transportation that has brought the field into commercial bloom. At first electric transportation was confined to a few niche use cases such…