Xfinity Security Cameras and xFi Pods

I'm trying to research reach prior to purchasing Xfinity security cameras. Here is my question - my home is fairly large 7,200 sq. ft. and the modem/router (owned by Xfinity) is on one corner of the house. I have 4 xFI Pods 2nd Genration. If I purchase the new 1080p security cameras would these connect to the new xFi Pods or they need stable covarage by the Xfinity gateway? The prior model 720p cameras, I was told by a Xfinity tech that will not connect to the pods.