I barricade the back door at night, clothes airer (sits under the handle) and bucket/brush/mob etc... so it would make a hell of a racket for anyone trying to get in through the back door. Front wise they would have to break two locked doors down. I have a bright security light and there are cameras around.
I also do like Gness with the body under a blanket thing on the sofa. No wig used yet though :) I like the plate and glass idea!
I keep things out of sight too. No clear view into the house and, even if there was, nothing of interest on show.
I also have extra bolts on the doors and window locks.
We have had issues around here, gangs and some regulars. Been some really nasty break ins, especially for car keys.