Everyone, or most people, either own, or know someone who owns a computer, laptop, or smart phone; after all, it is 2012. Many families have a computer that's shared by parents and kids alike, and its use is for enjoyment - whether that's looking at pictures, playing games, or keeping in touch with loved ones far away. Needless to say, the computer gets passed around and sees a lot of dirty hands, smudges, and smears.