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  _____     _____     ______    _____     ______  
 / ____||  |  ___||  /_   _//  |  ___||  /_   _// 
/ //---`'  | ||__      | ||    | ||__    `-| |,-  
\ \\___    | ||__     _| ||    | ||__      | ||   
 \_____||  |_____||  /__//     |_____||    |_||   
  `----`   `-----`   `--`      `-----`     `-`'

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Text this: Programmable metasurface for front-back scattering communication