> But of course it does penetrate, it goes through walls. Are your walls conductive, eg, largely made of water with various electrolytes? Because otherwise the

> But of course it does penetrate, it goes through walls. Are your walls conductive, eg, largely made of water with various electrolytes? Because otherwise the comparison is senseless. Imagine putting an 8mm or so layer of of skin/fat/bone across each wall. By what factor would that reduce received power on the other side of the wall. The max power out of a wifi router is 100 mW, that is a tenth of a watt. The amount of power impinging on your body from any reasonable distance will reduce that power quadratically. The amount of power which makes it through your skin and bone to get to your brain, considering it is 2.2 GHz or 5 GHz, is another factor lower.