Apple could end up tracking your iPhone, even if it was turned off

I'm sure the NSA didn't have to twist Apple's arm too much to get this done, but Apple has patented a system that tracks iPhones even when they have been switched off. Apple's patent would see the iPhone prompting a user to enter their security code to formally shut it down.

If the code isn't typed in, or it is typed incorrectly a number of times, the phone will appear off. But this isn't the case; the iPhone is still "on" but it appears to be off to the user. While this sounds like a great idea for security, it does mean that Apple could track your iPhone even if you thought it was "off". You would be none the wiser.

This shouldn't come as a surprise to you, as it can be done on Android smartphones right now. This can be tested by having an Android-powered smartphone far away from a cellular tower, and then keep an eye on the battery usage on your smartphone. Researchers have used this method to track an Android smartphone by making a malicious application that didn't have access to Wi-Fi or GPS, and only kept an eye on the power consumption of the phone.