My neighbors would be sorely disappointed in my ability to spot a thief. Blackout curtains drawn. Movie playing at a loudish volume.

Ah the memories...
It wasn't that long ago I got in shit from a relative who came over banged and kicked on the door(outside insulated door swings out and locks) and nobody heard her.
My front door is on the back wall of my livingroom.
She was soooo mad when it happened the second and 3rd time.
Now she calls first.

I just want a camera at my entrance so I can know whether I want to open the door or not when someone knocks.

Activated by a doorbell button (no door bell).
I like that idea.

Charles, you'll need to post a chart inside the door so you can quickly judge the "cuteness factor".

Agreed.

How about a wood carving that looks like a gun?

Or a machete?

A battery powered electric chain saw?

A squirt gun full of acid?

A box of large tarantulas to let loose.

Pepper spray.

Forget the tasers. I've had one. Total waste of time. I used to taser myself after a couple, just for fun. Hurts like hell though. Would have to get close and lucky with it to do any good. Otherwise you'd just pi$$ the other person off.

Just keep playing Netflix movies. That'll be sure to keep everyone away.

Seriously, Peter's suggestion is probably the best...your neighbours.