How It Works - Huawei NEXUS 6P Quick Start Manual

For example, here's a Google Now card that appears when you're about
to start your commute:
After you start using Google Now, you don't need to do anything else. You
can fine-tune some settings, but Google Now doesn't need any elaborate
setup.

How it works

To know when to show information you'll find useful, Google Now uses
contextual data from your device and from other Google products, plus
data from third-party products that you allow Google Now to access. For
example, if you have an appointment in Google Calendar that includes