Comment by _jal
4 years ago
To put a slightly finer point on it, I can't see through your walls with my lightbulb, but I probably can see through your walls with my router.
Your creepy neighbor in the apartment next door is getting a new toy.
4 years ago
To put a slightly finer point on it, I can't see through your walls with my lightbulb, but I probably can see through your walls with my router.
Your creepy neighbor in the apartment next door is getting a new toy.
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
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