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Curious: What about adding a small battery powered WiFi device to your dogs collar? Would that look like a person moving around the house? What about a WiFi con
by snarf21 1y ago
Curious: What about adding a small battery powered WiFi device to your dogs collar? Would that look like a person moving around the house? What about a WiFi controlled mini drone that flew around you house?
[Note: this should be illegal]
- deleted 1y ago[deleted]
- AStonesThrow 1y ago[dead]
- Aurornis 1y agoA much easier alternative is to not enable the feature on your router. It's an opt-in feature. If you don't set it up, they aren't generating the home/away chart like shown in the article.
- vel0city 1y agoThis technology doesn't rely on you actually having a WiFi device on you. It can detect presence/motion by changes to the standing waves of the EM propagation throughout the room. As the salty water meatbags move from room to room we change how the reflections and scattering patterns of 2.4 and 5GHz waves move. Studying these changes and some calibration, you can even determine small changes (like is the person on the left side of the room breathing, are they standing or prone, etc). In their docs, they show using the WiFi connection from a printer to determine motion sensing and have the option to exclude pets.
- puppycodes 1y agoim very skeptical of the accuracy claimed. The layout and complexity of objects in most homes to do this is way to awkward to work reliably. For someone breathing or a heartbeat you need much higher GHz signal. Usually this is done at 30ghz to 60ghz. The power flux leaving the antenna has an inverse square drop off rate which makes this basically impractical unless your standing directly in front of it.
- lrvick 1y agoI have personally tested wifi imaging from a cheap old 2.4Ghz linksys router that was accurate enough to tell if my hand was open or closed, maybe 10 years ago.
- deleted 1y ago[deleted]
- paavoova 1y agoIs 60GHz not part of the standard now? Only a matter of consumer hardware support.
- vel0city 1y agoI don't think 60GHz is required on WiFi 7 which includes a lot of sensing, but I'm open to be proven wrong.
- Yeri 1y agoIt doesn't require a WiFi device to work. > If you’d like to prevent your pet’s movement from causing motion notifications, you can exclude pet motion in your WiFi Motion settings by turning on the Exclude Small Pets feature. > Motion is detected based on the amount of signal disruption taking place between the Xfinity Gateway and your selected WiFi-connected devices, so motion from small pets (around 40 pounds or less) can be filtered out while keeping you notified of large movements more likely to be caused by humans.
- godshatter 1y agoI was thinking of attaching a wifi enabled device to a roomba if you wanted to appear to be home when you weren't. I would hope, though, that doing something like this wouldn't be illegal. It's your home, your stuff, etc. Besides, I don't want to get arrested for leaving a rotating fan on or something.
- brewtide 1y agoIt's basically passive radar using the wifi bands as the reflection AFAIK. It doesn't seem to be about the active state of devices, but the deflections in known points. It's creepy.