I have wifi cameras. They are on their own router thats hidden like our primary one.
They also email photos when motion is detected. I delete hundreds of spams a day, whats a few photos of a cat, bird, leaf or a walmart bag flying in the wind?
You can get them pretty cheap now days and many use 5 volts 1 amp or less.
My neighbor is into those game cameras. The ones hunters put up on a tree to photo deers and such by motion?
Still, someone wants to steal your car, they can do so with a tow truck in a few seconds and take it away.