Apple's mobile fingerprint reader starting with the iPhone 5C and 5S. The device's home button is also the Touch ID scanner. See iPhone 5.
"Touch ID." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/touch-id>.
Touch ID. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/touch-id