Just days after researchers demonstrated that some Apple iPhone and iPad owners have had their locations tracked by their devices, another security researcher revealed that Android phones, which use Google's mobile operating system, store users' geographic information in a very similar manner.
Citing security analyst Samy Kamkar, the Wall Street Journal today reported today that Google has been collecting location data from its Android smartphones.
When the phone recognizes a wireless network (regardless of whether or not it's encrypted), it sends information, including GPS coordinates, "up to the mothership," Kamkar wrote on his website.
In a statement, Google said, "All location sharing on Android is opt-in by the user. We provide users with notice and control over the collection, sharing and use of location in order to provide a better mobile experience on Android devices. Any location data that is sent back to Google location servers is anonymized and is not tied or traceable to a specific user."
On Wednesday, researchers Alasdair Allan and Pete Warden revealed that, since Apple released its latest iOS4 mobile operating system, the iPhone and iPad 3G have been storing unencrypted and unprotected logs of users' geographic coordinates in a hidden file.
In a post about their finding, Allan and Warden wrote, "We're not sure why Apple is gathering this data, but it's clearly intentional, as the database is being restored across backups, and even device migrations."
Apple has not responded to requests for comment from ABCNews.com.
Apple Letter Shows Company's Location Data Policies, Practices
Their research sparked criticism from digital rights activists and questions from lawmakers (not to mention a minor media frenzy).
But though the "discovery" was eye-opening for many Apple customers, it seems that the company had previously disclosed its location data practices in a letter to congressmen a year ago.
After emphasizing Apple's commitment to users' privacy, Sewall's letter said that to provide location-based services, Apple, its partners and licensees, may collect, use and share customers' precise location data, including GPS information, nearby cell towers and neighboring Wi-Fi networks.
But he added that the information is collected anonymously and the devices give users controls for disabling the location features. In addition to giving Apple customers the ability to turn off all location features with one "on/off" toggle switch, Apple requires applications to get explicit customer when it asks for location information for the first time.
Apple also stores the location information in a database only accessibly to Apple, the letter says.
But though Apple says that its location data practices support the services its customers want, analysts and activists say the practice still raises serious questions.
Aaron Higbee, chief technology officer and co-founder of mobile security firm Intrepidus Group, said that by collecting and storing information about users' locations, instead of just letting their phones rely on GPS technology, Apple and Google are able to speed up navigation applications and other popular location-based services.
"The theory is that by using this data, the phone can roughly figure out where it is quicker and enhance the experience for the user," he said.