In my opinion, Touch ID is one of the finest iOS features ever! It's an excellent mix of hardware and software that solves a real problem.
As you may know, Touch ID allows users to store up to five fingerprints. In turn, any of the registered prints can be used to unlock your iPhone and authenticate purchases associated with your Apple ID, such as App Store purchases.
But how does one go about remembering which fingers were used to set up Touch ID? We show you how easy it is to find out.