Could be combined with AR, https://hackaday.com/2019/01/09/smartphone-app-uses-ar-to-visualize-the-rf-spectrum/ https://hackaday.com/2019/01/09/smartphone-app-u

Could be combined with AR, https://hackaday.com/2019/01/09/smartphone-app-uses-ar-to-visualize-the-rf-spectrum/ https://hackaday.com/2019/01/09/smartphone-app-uses-ar-to-vi... DIY radio telescope tuned to 2.4Ghz WiFi, https://www.youtube.com/watch?v=g3LT_b6K0Mc https://www.youtube.com/watch?v=g3LT_b6K0Mc Image of physical building overlaid with RF sources, https://www.facebook.com/thethoughtemporium/posts/2162600763976308 https://www.facebook.com/thethoughtemporium/posts/2162600763... > When I made the first video and photoshoped my impression of what I thought this would look like, I never imagined it would actually be this close. It's official, our telescope can map the wifi in a building as if it were any other form of light.