📡 Did you know wifi can be used to literally see through walls? And US Vice-President, Kamala Harris, doesn't use bluetooth headphones because of the security risk they pose? In this episode we find the why of wifi and pillage the details on its Nordic cousin, bluetooth. 🧬 New episodes of Huh? Science Explained drop every Monday and Friday. Subscribe on the LiSTNR app to make sure you don’t miss an episode. 🔬 Follow us on TikTok @aussiesciencepodcasts.  👩‍🔬 Petra Stock has a degree in environmental engineering and a Masters in Journalism from University of Melbourne.  See omnystudio.com/listener for privacy information.