I wanted something where it was not so obvious that cameras were in use.
I recently found a new product called "Ring"
Online at - https://ring.com
The only thing is, I'll have to upgrade to a smart phone to use it... but it's cool in that even when I'm away from home, when someone rings the door bell it comes up on the smart phone and you can answer just like you were at home.
This way the person at the door is being recorded (audio and video) and it appears to them that I'm at home. This all comes in handy for sales people and for potential criminals that are staking out the house to see if anyone is home so they can break in if they think nobody is home.
All I need after this is lasers to shoot 'em in the butt as they leave