Why would law enforcement only request this in the iPhone and not in, say, Android or Blackberry or S60 or the plethora of other phone OSs that exist? And why keep it in a simple standardized db format instead of obfuscated or encrypted?
Sorry about the awkward title, I had to reduce it to 80 characters. This is the full title:
Was the iPhone location logging put in by quiet law-enforcement / intelligence agency request?