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FreeSense: Indoor Human Identification with WiFi Signals

arxiv.org

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Re: FreeSense: Indoor Human Identification with WiFi Signals

#23

Post by qrv3w »

lwis wrote: post #17

Is this much different to FIND?

FIND author here.

It's not doing internal positioning with Channel State Information (CSI), but there are folks that are [1]. The approach in FIND is different [2] - FIND just uses RSSI+MAC information which works great on mobile devices and simple esp8266 chips and doesn't require code for the specific network interface. As far as I know you have to write some network card specific code to be able to use CSI.

[1] https://arxiv.org/pdf/1603.07080.pdf

[2] https://github.com/schollz/find#about

Re: FreeSense: Indoor Human Identification with WiFi Signals

#25

Post by buddapalm »

AlphaWeaver wrote: post #4
EGreg wrote: post #3

How would a person be able to avoid this?

That's one scary implication: they can't.

I'd imagine a simple device that broadcasts noise or fake signals would be enough to throw it off. Lots of principles used in speed trap jammers could be used.

Re: FreeSense: Indoor Human Identification with WiFi Signals

#29

Post by SEJeff »

Note that this isn't all that dissimilar to Xandem's tomographic motion detection. Their "Xandem Home" product makes a Harry Potter Marauder Map style overlay on a map of your home showing where all moving people are in realtime. It is really cool stuff that I'm about to have installed in my own home:

http://www.securityelectronicsandnetworks.com/articles/2014/...

http://www.xandem.com/motion-detection

Compared to crappy PIRs from companies like ADT, it is great stuff.

Re: FreeSense: Indoor Human Identification with WiFi Signals

#30

Post by SEJeff »

qrv3w wrote: post #23
lwis wrote: post #17

Is this much different to FIND?

FIND author here. It's not doing internal positioning with Channel State Information (CSI), but there are folks that are [1]. The approach in FIND is different [2] - FIND just uses RSSI+MAC information which works great on mobile devices and simple esp8266 chips and doesn't require code for the specific network interface. As far as I know you have to write some network card specific code to be able to use CSI. [1] ht…

Still no IOS support yet I take it? I was so excited about that before realizing it only worked on Android.
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