They have a notice up in our local postoffice asking you to stand back from the counter until it's your turn - I'm not sure if this arrived at the same time as the type-your-PIN-in boxes for people doing banking things at the PO.

Someone stealing your PIN by looking over your shoulder is my biggest worry with chip'n'pin cards - though actually, I haven't been chip'n'pinned anywhere yet, which slightly surprises me.

Hopefully awareness of things like standing back from a PIN-typing-place being the correct thing to will rise as the machines become more common.