1. You can summon the feature through a dedicated button on the side.

2. They rushed back to the hospital but were unable to summon help.

3. You can summon a taxi in Lyft or show your boarding pass at the airport.

4. Unlike ride services that summon drivers immediately, Waze suggests calling for a ride a few hours in advance.

5. Drivers who own the wearable gadget can use it to unlock doors, summon service, and start the car.