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Wi-Fi signals enable gesture recognition throughout entire home

washington.edu

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Re: Wi-Fi signals enable gesture recognition throughout entire home

#11

Post by simonbarker87 »

znt wrote: post #7

If used right, this would disrupt home security industry so hard. It would be possible to get rid of any motion detectors, if I am not mistaken.

In the UK, signalling alarm systems (those that ring the police and so are actually useful) require that 2 types of detection technology be used in the one senor. Microwave and passive IR.

Using these together significantly reduces the chance of a false positive than just using one type on its own.

So, you could use this to replace the microwave sensor in the dual tech sensors but you would still need the PIR.

Re: Wi-Fi signals enable gesture recognition throughout entire home

#12

Post by deserted »

networked wrote: post #4

>A standard Wi-Fi router could be adapted to function as a receiver. The article and the embedded video do not make it entirely clear but if this technology could be deployed in existing Wi-Fi routers with relative ease [1] then it could have far-going implications for both privacy and the physical security of anywhere where there's Wi-Fi. Once it's easy enough to deploy on a hacked device that a hired script kiddie…

From the paper [1]

The WiSee proof-of-concept is implemented in GNURadio using the USRP-N210 hardware.

Each USRP is equipped with a XCVR2450 daughterboard, and communicates on a 10 MHz channel at 5 GHz. Since USRPN210 boards cannot support multiple daughterboards, we built a MIMO receiver by combining multiple USRP-N210s using an external clock. In our evaluation, we use MIMO receivers that have up to five antennas. We use single antenna USRP-N210s as transmitters.

So basically, they are using 6+ USRPs at $1400+ each to do these experiments. However, since each USRP is communicating on a 10MHz channel at 5GHz, someone with between two and five MIMO 802.11n Wi-Fi devices could theoretically do the same.

[1] http://wisee.cs.washington.edu/wisee_paper.pdf

Re: Wi-Fi signals enable gesture recognition throughout entire home

#14

Post by thinkling »

deserted wrote: post #12
networked wrote: post #4

>A standard Wi-Fi router could be adapted to function as a receiver. The article and the embedded video do not make it entirely clear but if this technology could be deployed in existing Wi-Fi routers with relative ease [1] then it could have far-going implications for both privacy and the physical security of anywhere where there's Wi-Fi. Once it's easy enough to deploy on a hacked device that a hired script kiddie…

From the paper [1] The WiSee proof-of-concept is implemented in GNURadio using the USRP-N210 hardware. Each USRP is equipped with a XCVR2450 daughterboard, and communicates on a 10 MHz channel at 5 GHz. Since USRPN210 boards cannot support multiple daughterboards, we built a MIMO receiver by combining multiple USRP-N210s using an external clock. In our evaluation, we use MIMO receivers that have up to five antennas. W…

I think you'd still have to hack the routers to provide the external clock, as the whole scheme depends on accurate sensor fusion between multiple antennas.

Re: Wi-Fi signals enable gesture recognition throughout entire home

#16

Post by ig1 »

networked wrote: post #4

>A standard Wi-Fi router could be adapted to function as a receiver. The article and the embedded video do not make it entirely clear but if this technology could be deployed in existing Wi-Fi routers with relative ease [1] then it could have far-going implications for both privacy and the physical security of anywhere where there's Wi-Fi. Once it's easy enough to deploy on a hacked device that a hired script kiddie…

It's already been done:

http://www.extremetech.com/extreme/133936-using-wifi-to-see-...

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