Apple is rolling out new privacy protections for iPhones and iPads, with a new system that makes it impossible for the company to unlock a device even with a warrant.

Apple's updated privacy terms indicate that under its iOS 8 mobile operating system the company will not have access to customer passwords.

The iOS 8 operating system is available on the iPhone 6, which goes on sale today and can be installed on many existing iPhones and iPads.

The update comes in the wake of revelations of massive government surveillance programs that sweep up data from computers and other devices.