I don't understand whats novel? I already have Zigbee energy harvesting switches in my house from Jung [1]:
> JUNG wall-mounted transmitters for Philips Hue work according to the principle of “energy harvesting”. As only small amounts of energy are needed to transmit the wireless signals, the kinetic energy arising from the switching action is sufficient to operate the transmitter without batteries and thus virtually maintenance-free.
Betting it’s a module for EnOcean in that, they’ve been doing energy harvesting switches for over twenty years now.
I think the new part of this proposed system is that power is provided wirelessly so each switch can be cheaper than the fancy mechanically powered transmitters. I do wonder how much energy it ends up wasting though.
> JUNG wall-mounted transmitters for Philips Hue work according to the principle of “energy harvesting”. As only small amounts of energy are needed to transmit the wireless signals, the kinetic energy arising from the switching action is sufficient to operate the transmitter without batteries and thus virtually maintenance-free.
[1] https://www.jung.de/en/10245/products/technology/transmitter...