To be fair, the posties are usually pretty good. It's only if they need a signature that they just leave the card.It's similar with our postie, if my wife's car isn't on the drive then he doesn't even knock.
Well, what a surprise, we went out for an hour yesterday and came back to find a card in the post box.
We tried to deliver a package but...
I'm sure they hide round the corner and wait until you go out!
I dunno, but there was a helicopter hovering about when we went out.They are watching you via satellite.