Using Smart Lock on my Samsung phone

Keep your device unlocked while it's on you. Just unlock it once and your device stays unlocked as long as it's in motion, such as when you're holding or carrying your device. Your devuce will lock when it detects that it's been put down.

Add a location where you want you device to stay unlocked, this could range from your home address, work address or favourite hangout. In order to use Trusted Places, you will need to enable Location Services.

Add a trusted Bluetooth device to keep your phone unlocked when connected, this could include a Bluetooth watch or your car's Bluetooth system.