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A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

wired.com

11–20 of 71 posts

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#11
post #8

With 90 minutes of data, they could pick out one driver out of a sample size of 15 . How meaningful is that, really?

Not sure it's as trivial as you seem to be implying, but extending this to more drivers would certainly be a logical next step.

Honestly it seems like everyone reading these kinds of papers/articles does a ctrl-f "sample size" before anything else. Bit cynical.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#12
post #11
post #8

With 90 minutes of data, they could pick out one driver out of a sample size of 15 . How meaningful is that, really?

Not sure it's as trivial as you seem to be implying, but extending this to more drivers would certainly be a logical next step. Honestly it seems like everyone reading these kinds of papers/articles does a ctrl-f "sample size" before anything else. Bit cynical.

For good reason.

It's been easy to do face identification for a very small population for a while. But scaling that to thousands of people has proven quite difficult.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#13
post #8

With 90 minutes of data, they could pick out one driver out of a sample size of 15 . How meaningful is that, really?

I think they meant 15/15 drivers which is a little better, but yeah.

"...could let them correctly distinguish the correct driver out of 15 individuals about nine times out of ten, after just 15 minutes of driving."

So, the claim is 90% accuracy in determining which one of the fifteen drivers they are looking at. So, they were correct on 13.5 drivers.

Um, what?

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#14
post #13

Earlier quoted context omitted.

I think they meant 15/15 drivers which is a little better, but yeah.

"...could let them correctly distinguish the correct driver out of 15 individuals about nine times out of ten, after just 15 minutes of driving." So, the claim is 90% accuracy in determining which one of the fifteen drivers they are looking at. So, they were correct on 13.5 drivers. Um, what?

Try parsing it as "90% of drives", not of drivers.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#15
I'm surprised it took 90 minutes; I'd imagine that it'd only take two or three. The data is very rich and continuous, and the knowledge is almost entirely reflexive. I would also think that identifying typists wouldn't take much longer. Does anybody know of any papers on that? You could pull that off with javascript.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#17
post #14
post #13

Earlier quoted context omitted.

"...could let them correctly distinguish the correct driver out of 15 individuals about nine times out of ten, after just 15 minutes of driving." So, the claim is 90% accuracy in determining which one of the fifteen drivers they are looking at. So, they were correct on 13.5 drivers. Um, what?

Try parsing it as "90% of drives ", not of drivers .

That doesn't make sense to me. The constraint is 15 minutes total. If drives vs drivers give different data, that could only imply that (a) each driver's 15 minutes spans multiple vehicles, or (b) they make conflicting conclusions for the same driver across multiple trips.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#18
post #17
post #14

Earlier quoted context omitted.

Try parsing it as "90% of drives ", not of drivers .

That doesn't make sense to me. The constraint is 15 minutes total. If drives vs drivers give different data, that could only imply that (a) each driver's 15 minutes spans multiple vehicles, or (b) they make conflicting conclusions for the same driver across multiple trips.

You're reading constraints into the experiment that don't appear to exist. My take is that after 15 minutes of driving the algorithm could correctly identify which driver was behind the wheel. That means: I get in, start driving, and within 15 minutes or so, the system analyzing the car's internal network will, with 90% specificity, say, "The driver was 'rosser."

I don't see where you're coming up with only 15 minutes total driving. That isn't implied anywhere in The Fine Article. But even leaving that detail aside, it would actually be more impressive than the reported finding if they were correctly identifying people that well after only 15 minutes total!

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#19

"In a study they plan to present at the Privacy Enhancing Technology Symposium in Germany this July" How would this enhance privacy? It seems like it would do the opposite?

This is exactly the reason they would never consider lock-picking techniques at lock symposium.

And hacking techniques at a computer security conference.

Re: A Car’s Computer Can ‘Fingerprint’ You in Minutes Based on How You Drive

#20
Talk about doing things the hard way. With 15 people, I'd bet you could determine the driver simply by the weight sensor in the driver's seat. No need to do any actual driving. You could probably make some progress with radio station settings (volume/channel etc) or even how they adjust the seats/mirrors.
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