http://findarticles.com/p/articles/mi_m0FCI/is_6_60/ai_74090344 But all major league general managers and managers received the following March 31, 2000 memo regarding electronic equipment from Sandy Alderson , the executive vice president of baseball operations. It reads: "Please be reminded that the use of electronic equipment during a game is restricted. No club shall use electronic equipment, including walkie-talkies and cellular telephones, to communicate to or with any on-field personnel, including those, in the dugout, bullpen, field and--during the game--the clubhouse. "Such equipment may not be used for the purpose of stealing signs or conveying information designed to give a club an advantage." 下略 请有研究者继续补充.. --

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