The future iPhone 5S owners, shall, to unlock their phone, put their finger on the home button However if you have sweaty fingers Touch ID may not recognize you In this case, you can say goodbye to the ability to unlock your mobile A shame isn't it?
However, if the phone was restarted, or it hasn't been unlocked for 48 hours (sweaty fingers? ...), an option with a password you pre-registered will be displayed for you to avoid the hassle of "brick in your pocket."