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Apple is not “recording your moves”

willclarke.net

61–70 of 81 posts

Re: Apple is not “recording your moves”

#61
post #4

Interesting analysis that strongly suggests the coordinates are for cell towers, not the iOS device.[1] Personally, the fact that the file is in a cache directory path, and that some people don't have much data, or any, suggests to me that some programmer forgot to trim his cache or picked a ridiculously large size before he decides to trim. "locationd" wants to know the coordinates of the cell towers you communicate…

You do realize that the towers themselves have had that information about you forever, so AT&T (or now Verizon) can plot your every move.

Does AT&T retain the data for a year? Do they give it to the ass hat that stole my laptop?

Re: Apple is not “recording your moves”

#63
post #3
post #2

The conclusion about a "general place at a general time" seems entirely true when you're on a highway, moving quickly and hopping infrequently to large distant cell towers. No wifi points anywhere close. Just like the chosen example. I bet its entirely different when you're in any kind of built-up area. Wifi points every few hundred meters, small cell towers every kilometer or two. I bet in those situations, someone…

I'm not the author. But I believe the O'Reilly researchers claim that the co-ordinates logged are of the device itself. It is not clear at all that this is true and the author of this post presents some evidence that would suggest otherwise.

The device location is not logged in this database at all.

What it does is log the locations of all cell towers that it can communicate with at a point in time. So for a given timestamp, there will be dozens of points logged. So while the data will be able to say "You were somewhere in downtown Pittsburgh at 1:59PM on Monday", it won't be able to say "You were at 517 Liberty Ave at 1:59 on Monday." Also, timestamps for existing towers are updated whenever they are mapped an additional time. So if I was downtown again on Thursday, no one would be able to tell from my data that I had been there on Monday.

See my previous comment in another thread for more detail:

http://news.ycombinator.com/item?id=2467895

Re: Apple is not “recording your moves”

#64

Earlier quoted context omitted.

The FAQ has nothing to do with it. Nobody is contesting that cell tower location information is being used. The differing claim is this: the O'Reilly researchers claim that the co-ordinates logged are those of the device itself and these co-ordinates are possibly calculated using cell tower triangulation, while this blog post claims that the co-ordinates logged are those of the cell towers themselves rather than the…

why does such a small difference matter?

Because for a given timestamp, the iphone logs dozens of cell towers. So while you might be able to tell I was in Pittsburgh on Monday, you won't be able to figure out what address I was at.

Re: Apple is not “recording your moves”

#65

The piece is specifically positioned as a retort to a somewhat sensationalist O'Reilly piece, and in that context it's perhaps decent. But this headline alone on HN is at least as sensationalist - redefining "your phone is tracking your movements between cell towers with a general accuracy of 2km or less" to "your phone is not recording your moves" is just newspeak. Argue that the accuracy makes the data less usable…

First off, information is only logged when using Location Based Services. So if you never load up Foursquare or Google Maps, you have nothing to fear. Also, you can totally disable LBS in your settings.

Secondly, it's only maintaining a single record for each cell tower and updates the "last seen" timestamp. So while it can tell you the last time I've been to a specific area, it can't tell you how often or when I've been there previously.

Re: Apple is not “recording your moves”

#66
post #61

Earlier quoted context omitted.

You do realize that the towers themselves have had that information about you forever, so AT&T (or now Verizon) can plot your every move.

Does AT&T retain the data for a year? Do they give it to the ass hat that stole my laptop?

The iPhone only maintains the last time a given cell tower was "seen". It does not have your complete movement data for the entire year.

(Exception would be someone that has been traveling the entire year and has never been back to the same place twice.)

Re: Apple is not “recording your moves”

#67
post #18

I actually think my honest opinion on this fiasco is "someone can derive a user's movements from this database, but how big a deal is it really?" I still think this should be fixed, Apple should explain it and release an update that pares it down to the bare minimum data for whatever function it serves. However, let's honestly go through the implications of this: - The user's cell provider already knows this. [1] - I…

>If someone "owns" the user's phone then they can get their movement history.

Again, it only stores that most recent time that you've seen a specific cell tower, it doesn't store your entire movement history.

Re: Apple is not “recording your moves”

#68
post #24
post #18

I actually think my honest opinion on this fiasco is "someone can derive a user's movements from this database, but how big a deal is it really?" I still think this should be fixed, Apple should explain it and release an update that pares it down to the bare minimum data for whatever function it serves. However, let's honestly go through the implications of this: - The user's cell provider already knows this. [1] - I…

The point I made in another thread on this: http://news.ycombinator.com/item?id=2468950 Basically by having it stored locally, it lowers the barriers to accessing data, so that it is no longer restricted to law enforcement people seeking telco data. That changes a lot of things. For instance imagine you're a police informant or undercover cop: a technically savvy mob would be silly not to hoover up the location data…

One would hope that a technically savvy mob would just disable location services on their iPhones in the Settings app and not track this information to begin with.

Re: Apple is not “recording your moves”

#69
post #42
post #26

Earlier quoted context omitted.

For instance imagine you're a police informant or undercover cop: a technically savvy mob would be silly not to hoover up the location data of everyone in their org, Sure, but if they have root or physical access to the phone (which they need) they can install a realtime tracking snooper to follow you around instead. I agree this lowers the barrier, but fundamentally it seems to come down to - if you don't want peopl…

The point to be made here is that Apple's provided almost universal, historical snooping capabilities without any individual actors having to get James Bond on the situation. Every iOS device has the potential to reveal someone made a trip to a police station, or spent a lot of time in a suburb that doesn't match with a particular story. The fact that people of sufficient technical capability and motivation can alway…

>Every iOS device has the potential to reveal someone made a trip to a police station, or spent a lot of time in a suburb that doesn't match with a particular story.

Sure, it has the potential. But only if the idiot was dumb enough to check into jail from Foursquare (or otherwise use a Location Service).

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