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    When President Barack Obama signed Congress’ fiscal cliff deal into law Wednesday evening, he was on vacation in Hawaii, approximately 4800 miles from Washington, D.C.

    How did he manage the feat? By using what’s called an “autopen” — a nifty piece of technology that copies a user’s pen strokes, stores them in memory and later replicates them without the user being present. The above video shows a “Ghostwriter” model autopen, which is used by many government officials and celebrities but is not confirmed to be the exact model used by Obama.