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\ \\ / //  |  ___||  | |/ //   / _ \\      ___   
 \ \/ //   | ||__    | ' //   | / \ ||    /   || 
  \  //    | ||__    | . \\   | \_/ ||   | [] || 
   \//     |_____||  |_|\_\\   \___//     \__ || 
    `      `-----`   `-` --`   `---`       -|_|| 
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發送短信 : Securing IoT monitoring device using PUF and physical layer authentication