While this is interesting work, I would say it's going into the wrong direction. It is simplifying the devices at the cost of less efficient use of the already

While this is interesting work, I would say it's going into the wrong direction. It is simplifying the devices at the cost of less efficient use of the already crowded radio spectrum (the plugged-in device must transmit the carrier wave and the reflections from passive devices consume twice the spectrum due to mirror frequencies) Everyone else is going the other way: complicating devices to achieve higher spectrum efficiency. This approach might be sustainable for spy agencies, but I don't see how it could scale to mass deployment (especially with device densities predicted by IoT pundits these days).