A team of French researchers at Institut Polytechnique de Grenoble was able to develop a wallpaper that can allegedly block Wi-Fi signals.
The French researchers said that the wallpaper is currently being licensed to a Finnish manufacturer for production, and that it’s cost will be similar to a traditional mid-range wallpaper. The team hopes to have the Wi-Fi blocking wallpaper available in the market next year.
I don't think this could kill wardriving, but who knows, maybe in a few years it will be standard in new homes?

