發送短信 : Place recognition for indoor navigation

 __   _     ______              _____     ______  
| || | ||  /_   _//     ___    |  ___||  /_   _// 
| '--' ||   -| ||-     /   ||  | ||__    `-| |,-  
| .--. ||   _| ||_    | [] ||  | ||__      | ||   
|_|| |_||  /_____//    \__ ||  |_____||    |_||   
`-`  `-`   `-----`      -|_||  `-----`     `-`'   
                         `-`