I used to think that if I ever got hit by a car while out and about (God forbid, of course), the most useful place to find identifying information would be in my wallet. But that's not really the case any more -- as cops are learning these days, the best place in a person's pockets to learn about them is their iPhone. Not only is the phone full of contact information (and indeed, I've included an "ICE" number on every phone I've ever had), but it's got lots of other information about me, including where I've been lately, what kinds of things I've searched for, and even what apps I've used and how often.
Besides the obvious places (in the apps themselves)