What means or what’s No Touch ID on an Apple iPhone

What means or what’s No Touch ID on an Apple iPhone?

The function Touch ID is Apple Touch ID biometric technology that allows an iPhone 5S(6, 6S, 6 plus,7,8 ) to recognize a fingerprint as a passcode.

Verified users can then unlock the device or authorize purchases from Apple’s iTunes Store, App Store or iBooks Store by pressing the device’s home button.