發送短信

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  _____    __   __   _    _      ___      _  _   
 / ____||  \ \\/ // | \  / ||   / _ \\   | \| || 
/ //---`'   \ ` //  |  \/  ||  | / \ ||  |  ' || 
\ \\___      | ||   | .  . ||  | \_/ ||  | .  || 
 \_____||    |_||   |_|\/|_||   \___//   |_|\_|| 
  `----`     `-`'   `-`  `-`    `---`    `-` -`

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發送短信 : WiFi based device-free human activity recognition