Yes, but since the wavelength of WiFi signals is around 6 to 12cm, you’d need a fairly large sensor (aka ‘antenna’) We also don’t call that ‘optical’ by the wa

Yes, but since the wavelength of WiFi signals is around 6 to 12cm, you’d need a fairly large sensor (aka ‘antenna’) We also don’t call that ‘optical’ by the way. ‘Optical’ is typically reserved to wave lengths visible to human or animal eyes: anything between the ultraviolet and the infrared.