Touch ID
Touch ID is an electronic fingerprint recognition feature , designed and released by Apple Inc . , that allows users to unlock devices , make purchases in the various Apple digital media stores ( the iTunes Store , the App Store , and the Apple Books Store ) , and authenticate Apple Pay online or in apps . 
<triplet> Touch ID <subj> Apple Inc. <obj> developer <triplet> iTunes Store <subj> Apple Inc. <obj> operator <triplet> Apple Books Store <subj> Apple Inc. <obj> developer <triplet> Apple Pay <subj> Apple Inc. <obj> developer