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comment by Cedar
Cedar  ·  1965 days ago  ·  link  ·    ·  parent  ·  post: Focus: Imaging with Your Wi-Fi Hotspot

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  ·  1965 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.