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99 smartphones are transported in a handcart to generate virtual traffic jam in Google Maps. Through this activity, it is possible to turn a green street red which has an impact in the physical world by navigating cars on another route! #googlemapshacks http://www.simonweckert.com/googlemapshacks.html …pic.twitter.com/6KcMm1XgAF
I call BS on this one. The phones need proper GPS reception for this to work and the ones in the deeper layers of the cart will not have that. Furthermore Google will probably filter out cases like "99 phones on a single spot". They need to filter out pedestrian traffic anyways.
That's maybe why using the cart, so that it doesn't have the step-shaking, but smoother movement. And I don't think the upper devices will block the GPS signal too much.
GPS isn't accurate enough to pinpoint within more than a few hundred yards, so 99 phones in a single spot is more like 99 in a large circle around the street and other nearby streets. Easy to spoof gps data on virtual android devices anyway
What? GPS accuracy is well below the 10 yards range.
Phones today don't necessarily need GPS to determine the current position. Knowing the Wifi signal strength of a hand full of Access Points around you is sufficient to get coordinates with ~10 metres precision. Example:https://developers.google.com/maps/documentation/geolocation/intro …
But the pedestrian vs. car traffic classification is indeed somewhat interesting here.
"The phones need proper GPS reception for this to work and the ones in the deeper layers of the cart will not have that." - Well, no, first they *will* of course have GPS reception even in the deeper layers, and besides, maps uses WiFi-SSID capture and that will work too.
Well that is an art-supporting, engineering gutu speaking out for the true definition of art - something of no intrinsic value.
Not only gps is useful here, iOS and Android smartphones combine several different network signals to get their location: wi-fi, GSM, LTE, and of course GPS/GLONASS https://en.m.wikipedia.org/wiki/Mobile_phone_tracking …
Phones don't use GPS alone, that's why they're better than stand alone satnavs in cities. It's augmented with cell tower data, wifi, and dead reckoning. Also they likely each had a fix before they were put in the cart, so not starting from nil. I'm pretty sure this would work.
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