@5ifty8ixht: placing aluminum foil behind a Wi-Fi router to boost signal strength, a technique supported by a 2021 study from the University of London showing that reflective surfaces can redirect radio waves, potentially improving coverage by up to 20% in targeted areas. This method mimics directional antennas by focusing Wi-Fi signals, as confirmed by a 2019 IEEE paper on electromagnetic wave manipulation, though it risks creating dead zones if misaligned due to the router's omnidirectional design.