What information is being recorded?All iPhones appear to log your location to a file called "consolidated.db." This contains latitude-longitude coordinates along with a timestamp. The coordinates aren't always exact, but they are pretty detailed. There can be tens of thousands of data points in this file, and it appears the collection started with iOS 4, so there's typically around a year's worth of information at this point. Our best guess is that the location is determined by cell-tower triangulation, and the timing of the recording is erratic, with a widely varying frequency of updates that may be triggered by traveling between cells or activity on the phone itself.What are the implications of this location data?The cell phone companies have always had this data, but it takes a court order to access it. Now this information is sitting in plain view, unprotected from the world. Beyond this, there is even more data that we have yet to look at in depth.For example, in my own case I (Alasdair) discovered a list of hundreds of thousands of wireless access points that my iPhone has been in range of during the last year.How can you look at your own data?We have built an application that helps you look at your own data. It's available at petewarden.github.com/iPhoneTracker along with the source code and deeper technical information.What can you do about this?As we note around the 20-minute mark in our video discussion, an immediate step you can take is to encrypt your backups through iTunes (click on your device within iTunes and then check "Encrypt iPhone Backup" under the "Options" area).