I ran back to the living room of the white house one last time and placed the final treasure inside the trophy case. Just as in the original game, a map appeared inside the case, directing me to a hidden barrow that marked the end of the game. But I wasn’t concerned with the map or with finishing the game. All of the "trophies" were now "collected" in the case, so I took out the Cap’n Crunch whistle. It had three holes across the top, and I covered the third one to generate the 2600-hertz tone that had made this whistle famous in the annals of hacker history. Then I blew one clear, shrill note.