I had hip surgery and we used this to help us out!  We set up the camera so it was on me while I was connected to recovery machines in our basement.  I could wave setting off the motion sensor, during the night.  It alerted my husband in our room through an app on his phone.  He could talk to me through the camera and he could hear my answers so he knew what I needed.  I know this was an unusual use for this, but it worked great and I know it will come in handy for a baby's room, babysitter camera, and security camera as well.