I smell what yer steppin' in.
>>6777310 Old news and not the only method but:
Scientists have found a way to photograph people in 3D through walls using Wi-Fi
https://www.businessinsider.com/wifi-camera-sees-through-walls-2017-5
I smell what yer steppin' in.
>>6777310 Old news and not the only method but:
Scientists have found a way to photograph people in 3D through walls using Wi-Fi
https://www.businessinsider.com/wifi-camera-sees-through-walls-2017-5