Geofence Push Notification?

Is there a way to trigger a user specific push notification when they are within a certain geofence?

In general: are there good resources on triggering user specific / trigger driven push notifications?

Thanks!

Might be able to do something with Radar API. Haven’t tried it yet.

Isn’t this use case not requiring users to click any button? Would we be able to trigger an action without a button click?