Author Topic: Virtual Traffic Jam - Google Hack  (Read 477 times)


nicknack

  • Hornblower
Re: Virtual Traffic Jam - Google Hack
« Reply #1 on: February 04, 2020, 09:02:01 am »
 ;D
There's no vibrations, but wait.

Re: Virtual Traffic Jam - Google Hack
« Reply #2 on: February 05, 2020, 07:15:18 pm »
The next stage is to do the same without needing to be physically there:-

Jailbreak an android phone, install a dummy root certificate, sniff the traffic TLS that the phone is sending home to Google maps and then work out how to forge similar from the comfort of your own darkened bedroom.
"Yes please" said Squirrel "biscuits are our favourite things."

arabella

  • no se porque yo no lo se
Re: Virtual Traffic Jam - Google Hack
« Reply #3 on: February 05, 2020, 08:03:09 pm »
Do I infer that "traffic jam" in fact means "lots of phones round here"?  & relies on drivers leaving their phones properly on whilst driving.
In the dark, all views are the same.

Kim

  • Timelord
Re: Virtual Traffic Jam - Google Hack
« Reply #4 on: February 05, 2020, 08:07:13 pm »
Do I infer that "traffic jam" in fact means "lots of phones round here"?  & relies on drivers leaving their phones properly on whilst driving.

It's a bit cleverer than that, and I'm not convinced that the proposed method would actually work.  It can presumably tell the difference between a bus stop (lots of phones moving together then stopping) and a traffic jam (lots of phones, moving like cars, that have stopped in a queue)...

Androids tend to default to sharing location data with google most of the time, so if by "properly on" you mean "switched on and with a network connection" then yes.  I drive with my phone in that state all the time.  Sometimes it even rings or makes other notification sounds, which I ignore because I'm driving.  I certainly wouldn't faff about powering it down just because I was about to drive.
Careful, Kim. Your sarcasm's showing...

Re: Virtual Traffic Jam - Google Hack
« Reply #5 on: February 05, 2020, 09:13:23 pm »
This particular hack was performed by running the Google Maps app on the phone(s), that way it has legitimate need to both access the location (so it can place the blue splodge on the map) and also get live updates on traffic in the area. By providing location data to google servers they can infer speed and also "busy-ness" of the section of road. Google have done this for a while but they bolstered their capabilities with acquisitions like Waze.

I doubt they're getting frequent enough updates from phones in normal/passive mode with no Google Maps active to be useful for this.

People navigate using apps on their phone all the time. I do when I do unfamiliar journeys but I make sure I disable notifications when doing this so nothing pops up to annoy me.

Separately I've read that Google Maps is using accelerometer data in order to differentiate between a car and a motorbike (probably not just accelerations in a straight forward line but side to side and yaw/pitch/roll) so it's probably able to determine if something is "bus like" and the default identification being "car".
"Yes please" said Squirrel "biscuits are our favourite things."

Zipperhead

  • The cyclist formerly known as Big Helga
Re: Virtual Traffic Jam - Google Hack
« Reply #6 on: February 05, 2020, 10:25:58 pm »
Separately I've read that Google Maps is using accelerometer data in order to differentiate between a car and a motorbike (probably not just accelerations in a straight forward line but side to side and yaw/pitch/roll) so it's probably able to determine if something is "bus like" and the default identification being "car".

I had noticed that when I look at my google timeline it is pretty good a working out whether it was a car or motorbike journey. Another (motorcycle) navigation app that I use provides various stats including maximum bank angle.
Our son does know who Boz Scaggs is, we've done ok as parents.

Re: Virtual Traffic Jam - Google Hack
« Reply #7 on: February 06, 2020, 10:37:21 am »
So how do they differentiate bicycles, I wonder?

Re: Virtual Traffic Jam - Google Hack
« Reply #8 on: February 06, 2020, 10:42:43 am »
So how do they differentiate bicycles, I wonder?

position (maybe), but probably mostly speed and analysis of the accelerometer data (they really are amazingly sensitive, you could probably make a reasonable cadence sensor even if the phone was just thrown in a pannier).
"Yes please" said Squirrel "biscuits are our favourite things."

FifeingEejit

  • Not Small
Re: Virtual Traffic Jam - Google Hack
« Reply #9 on: February 06, 2020, 02:36:17 pm »
I've had it confuse cycling for driving.
And more embarassingly... Walking for cycling.

seems to be based on speed and distance.

Re: Virtual Traffic Jam - Google Hack
« Reply #10 on: February 06, 2020, 05:55:38 pm »
He does say he had 90 phones and had to go back and fore up the same street several times before it registered as a jam so it is possibly quite a high threshold. I bet it won’t work again.


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