Not a lot is needed for just a camera. If you want it to record what it see's then need a recorder. Can get full systems at most places, HD, Lowes, Walmart, etc. The better the camera the better the image. Corded models need to be plugged in but they comes with a 60 ft cable to carry low voltage for power and coax for video. All is plug and play
Wireless can be interfered with, and if you can pick it up from wifi, so can others
I knew I came to the right place. I had never thought about wifi being picked up by others, that makes a huge difference especially if there are other cameras in the house.
Wifi cameras can work, but... You need a good wifi system (multiple AP's) all set on proper channels to support it. I've got 5 HD cameras on wifi, and 4 unifi AP's to provide enough bandwidth. For the vast majority of people, I always recommend to go hard wired.
