A wifi camera will not cut it if you are sending to a 24/7 recording device like an NVR or BI. It will slow your whole system down.
There are always ways if you don't want to run an ethernet cable.
You need power anyway, so go with a powerline adapter to run the data over your electric lines or use a nano-station.
Is there ethernet outside now that you could add a splitter and run another line down behind a downspout or something else and then bury it?
Maybe you are fine now one day with wifi cams, but one day something will happen. A new device, neighbors microwave, etc.
Cameras connected to Wifi routers (whether wifi or not) are problematic for surveillance cameras because they are always streaming and passing data. And the data demands go up with motion and then you lose signal. A lost packet and it has to resend. It can bring the whole network down if trying to send cameras through a wifi router. At the very least it can slow down your entire system.
Unlike Netflix and other streaming services that buffer a movie, these cameras do not buffer up part of the video, so drop outs are frequent, especially once you start adding distance. You would be amazed how much streaming services buffer - don't believe me, start watching something and unplug your router and watch how much longer you can watch NetFlix before it freezes - mine goes 45 seconds. Now do the same with a camera connected to a router and it is fairly instantaneous (within the latency of the stream itself)...
And then once you add distance and external walls, you will get the pixelated mess Ring and Nest and other wifi cams are known for when the motion happens.
