Don't know much about the invisibility cloak. But in wireless communications the "better smart mirror" idea is being investigated to achieve arbitrary reflectio

Don't know much about the invisibility cloak. But in wireless communications the "better smart mirror" idea is being investigated to achieve arbitrary reflection directions that defy Snell's law [1][2]. The objective is to hang these "mirrors" on walls/buildings and reflect the incident power towards areas where the reception is poor. [1] https://arxiv.org/abs/2110.09183 https://arxiv.org/abs/2110.09183 [2] https://ieeexplore.ieee.org/document/9718037 https://ieeexplore.ieee.org/document/9718037