I help him out with security camera installations and this gives me the ability to ask tons of questions.

Superspy that is being tracked, it's just annoying to know that microphones and cameras are invading my privacy.Disable this feature to stop your Samsung Smart TV from listening to youhttps://www.cnet.com/tech/home..."

I want to get cameras for the property - but cameras require wifi.

With Ring Video doorbell cameras, people don’t answer the door anymore to who they don’t know.But I definitely believe in door knocking leads (people you’ve talked to who show signs of motivation).

I need to tread carefully here but it happens and they are sophisticated enough that you won't know unless a bust happens or you consistently monitor exterior cameras and notice none of the people match who's actually staying at your property.

Can I put a security camera in the common areas that would be recording and could be referred to if there was an incident (clearly marked and disclosed to guests)?

I'd also plaster signs outside that there are cameras watching them. 

@Henry Lazerow Banking apps use your camera to take the photo so trying to use a texted picture is not going to work.

Do you have camera's on them recording everything going on there.   

Grantham,Remote cameras would be tough without power.