> I want to know when my cat leaves home I keep dreaming up a very simple (ish) solution involving a never-obstructed camera at ingress points like a doorway

> I want to know when my cat leaves home I keep dreaming up a very simple (ish) solution involving a never-obstructed camera at ingress points like a doorway where it can reliably track whether the cat is in our out of the house without relying on a hefty device they have to wear.