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Comment by jagger27

4 years ago

2.4GHz, 5GHz, and 6GHz have decent wall penetration, but 60GHz doesn't. It can bounce off walls to get around corners, so it doesn't necessarily need line of sight.

Wi-Fi Sensing works with 2.4/5/6 GHz which pass through walls, it is not specific to 60Ghz.

  • Yes, and? 5 and 6 GHz already struggle with thick walls (like those found between units in apartment buildings). Presence detection is one thing, but you can't see what I'm having for lunch through several walls with a single 2.4 GHz AP.

    500 terahertz = 600 nm (visible light)

    60 gigahertz = 5 mm

    6 gigahertz = 50 mm

    5 gigahertz = 60 mm

    2.4 gigahertz = 125 mm

    • “Yes and”

      - Unless 2.4 and 5 GHz are taken off the standard, my router will see me through the walls.

      - At 60 GHz, if I have wifi, my router can see me

      - To make our concerns clear to you, even at 125 mm resolution, you can tell if I like my wife to drill my bottom with a strap on. Or you can tell if I piously say my prayers at night (something that is increasingly political). Or if the immigrant next door spanks his kids. Or if his 15 year old daughter is “exploring” her body.

      And for what benefit exactly?

      So an ad agency can track me and know Im struggling with my diet, hovering over the fridge door?

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