So if you think about it, wireless signals, they travel through space, they go through obstacles and walls and occlusions, and some of them, they reflect off our bodies, because our bodies are full of water, and some of these minute reflections, they come back.
Então, se pensarmos bem, os sinais sem fio viajam pelo espaço, atravessam obstáculos, paredes e oclusões, e alguns deles refletem do nosso corpo, porque ele é repleto de água. Alguns desses reflexos minúsculos voltam.