HI, I really need a quick answer fast please, and the answer with the most helpful info gets chosen as best answer. Feel free to provide website links with the answer and I don't want anythings saying, "Well here is a bunch of websites to check it out for yourself." <---NO THANK YOU. Just tell me some gadgets and weapons spies used during the 1900's. THANKS! (For e.x what did Igor Gouzenko use, or Mata Hari, or Nora Baker A.K.A Inaayat khan... or Fritz Ferdinand.)