Imagine this scenario: Your iPhone has been stolen, and the thief knows your passcode. They now have access to confidential information and can make unwanted changes on your phone, even if you’ve ...

All of us should use iPhone passcodes and any of us can forget them, but few of us are New York City mayors being indicted for corruption and claiming to have changed the code to help investigators.

Your iPhone can feel nearly useless to a thief once you mark it as lost. Apple's Activation Lock can help turn a stolen device into a locked brick. That should make phone theft less profitable. Yet ...