Send an SMS to +43 664 178837 and your personal message will be promptly printed out on a sheet of paper. But, immediately thereafter, your text is fed into the jaws of a paper shredder and destroyed before your very eyes. The original seems to have been irrecoverably mangled. However, on every digital node the SMS passed through, there is the technical possibility—in the background, without your knowledge—to make one or more digital copies of it.
Credit: Stefan Tiefengraber (AT), 2011-2012, www.stefantiefengraber.com