By Sarah Kingsbury on Fri, 07/04/2014
If you gave it a try and decided Touch ID is not for you, you can easily disable the security feature and go back to using a passcode to unlock your iPhone 5s or to make iTunes and App Store purchases.
Go to Settings>Touch ID & Passcode and enter your passcode.
Toggle iPhone Unlock off or iTunes & App Store off. You can now access your iPhone with only the passcode.