Android 6.0 Marshmallow will allow users to quickly authenticate purchases on Google Play with their fingerprints. The device’s new fingerprint API now includes unlocking the phone and making mobile purchases safely by fingerprinting the user on the phone’s sensor.
Android owners must authorize Google Play to read their fingerprints if they want to verify their transactions this way; using a traditional passcode is still an option, but for those who want to save time while shopping, the fingerprint method is available. Any future devices with Android Marshmallow will be able to read fingerprints to authenticate purchases in the Google Play store.