As part of its announcement of the Nexus 5X and Nexus 6P, Google unveiled its new fingerprint sensor, Nexus Imprint. Imprint allows for secure logins and payments, and is the first implementation of the Android 6.0 Marshmallow fingerprint sensor API.
The Nexus Imprint sensor recognizes a print in 600ms. It learns more about your fingerprint as you use it, so its reliability will increase over time. Just tap your finger to the sensor to unlock the phone, and move it over to a payment terminal to use for NFC payments once it's unlocked.
For more from Google's latest Nexus announcements, be sure to stay tuned to our live blog of the event.