I had a previous resident at my previous address get snapped by a speed camera in another state. He must've been getting renewal notices by email because the infringement notice arrived by mail.

It was duly returned with 'Unknown At This Address'. A second arrived. Also returned. I don't remember the sequence but there were several, including a court summons (!). He is going to be in for a world of pain when he next drives in that state.

Also happened for some clown caught without a train ticket. Infringement notices, notice of fine, then debt collection! All letters returned with "Unknown At This Address" but still they came.

Wade.