This morning O'Reilly Radar published a nice technical article discussing that all Apple devices have been recording location data since the launch of iOS 4. So if you've been hauling your 3G iPad (or iPad 2) by your side for the past months, you likely have a laundry list of locations and time stamps.
The existence of this data on your iPad or iPhone has definite security and privacy implications associated with it. To make matters worse, the data file is unencrypted, unprotected, and is also duplicated on any machine you've used to sync your iPad. There currently is no evidence that this data is being transmitted or made available by anyone outside of you and your devices. Intentions of Apple, and the use of this data is also unknown at this time.
An immediate step you could take if you wish is to encrypt your backups through iTunes by clicking on your device in iTunes and then check "Encrypt iPad Backup" under the "Options" area.
If you are trying to remember the name of the hotel you stayed in last thanksgiving during your trip to the east coast, check out this handy iPhone tracking app. If you suspect that your spouse is cheating, the evidence may be existing on his iPhone...definite privacy issues!
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