It was first introduced in the iPhone 5S ... generated by the sensor is compared to a value stored in the Secure Enclave. If it matches one of the stored values, then the fingerprint is a match ...

but it holds the distinction of being well implemented from the get-go (remember the monstrosity that was the Samsung Galaxy S5 's fingerprint sensor, anyone?) With 2017's iPhone X release ...

After months of rumors, Apple today confirmed that the new iPhone 5S will include a fingerprint scanner. You can use your fingerprint to unlock your phone simply by placing your finger on top of ...