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comment by ThatFanficGuy
ThatFanficGuy  ·  2025 days ago  ·  link  ·    ·  parent  ·  post: Focus: Imaging with Your Wi-Fi Hotspot

Isn't any radio transmission decoder capable of doing that? As long as it has some level of density limit for crossing obstacles.

Cedar  ·  2025 days ago  ·  link  ·  

I would suppose that bandwidth, material absorption and environmental noise would be the most important factors here. Doing it with WiFi is 'novel' and gives them great publicity, it's technically impressive if they're able to meet the posited scenarios for use, but it felt like they were exaggerating or being taken out of context.

But hey, even light is just waves really.

kleinbl00  ·  2025 days ago  ·  link  ·  

It's an impressive DSP feat. There's no inherent directionality or steerability in the antenna array on your average hot spot and they're basically ad-hocking a synthetic aperture radar out of it.