On-body detection: This detects when you've carrying your phone and moving and keeps it unlocked, and automatically locks your handset when you put it down.
Trusted places: Assign a location where your handset is unlocked.
Trusted devices: Keeps your handset unlocked when it is close to a trusted Bluetooth device (Bluetooth has an effective range of some 10 meters or so).
Trusted face: Set up facial recognition to unlock.