The average e-mail message contains reams of information that can be useful to an in-house spook, from the computer used to create the message to whether it was altered after it was received.

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Compounding the problem, many of these computer systems were bespoke ones, built in the 1970s by in-house teams.

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For larger clients there are custom-tailored computer programs and even Herman Miller employees who will substitute for an in-house facilities management team.

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Its products are self-contained, designed not to house computer parts but just to feel good in your hand, and do what you want them to do.

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Rome (CNN) -- Raffaele Sollecito was a 23-year-old computer science student when his girlfriend's roommate, Meredith Kercher, was found dead in the house she shared with Amanda Knox in Perugia, Italy, more than five years ago.

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