Sysdiagnose-- this is the Apple logging
that is built into iOS devices.
We have a Google group for this class for alumni
that you will be prompted to join
in the morning of section 5.
When you start section 5, I tell you immediately,
email this address right now and request access.
If you are taking this class either on demand--
however you're taking it, we don't immediately ADD it.
What Lee and I do is we check it twice a month,
and then we add all the members.
So if you request access, you may get immediate access.
If you feel like you're waiting a long time,
just email me at my regular Gmail and say,
hey, Heather, I requested to join this group
and you forgot to add me.
This group has over 500 members now.
One of the members posted something once, saying,
has anyone seen the Apple logging that happens?
It's weird.
Someone else responded and said, yes, this actually
helped us with a missing persons investigation.
Apparently, the woman, before she was thrown into a trunk,
hit that SOS, and she felt that haptic vibration.
As soon as you feel that, there's
something called sysdiagnose that runs in the background.
And what Apple does is it goes and it collects all the towers
that your phone has touched, all the
Wi-Fi that your phone has been near.
All of these location artifacts are bundled up
into a TAR file that is gzipped and stored on your device.
Now, what's really cool is Mattia
and I did a presentation on this.
And it was first presented in Prague,
and then we did it at the OSDFCon
We wrote an entire paper on it.
So the paper was primarily written by Mattia.
I assisted with providing data sets,
and the Cheeky4n6Monkey wrote a lot of scripts
with some other contributors.
So if you go for585.com/sysdiagnose,
you will get all the documentation.
You will get all these scripts.
And you are going to get some experience with this in--
at the end of section 3 in lab 3.3b.