I was playing around last summer with my bees and set up an my phone to serve as a wifi webcam to watch them inside the hive. I am not affiliated whatsoever. If you dl IP Webcam app to your phone and type in the IP address it gives on any device you will have a live webcam within wifi range. It runs battery down but I thought it was cool. The IP changes with router since it isn't a static IP which is kind of a pain. There are probably easier ways without cord but it was free and easy.
Here is a quick vid of my GH
Here is a quick vid of my GH