If you have a smartphone, then inevitably you've received Push Notifications from your favorite apps. They're small alerts that pop up on your phone to tell you something about that app... It may be a coupon code, a touchdown in a football game, or countless other reasons that apps send out push notifications. When you open them, they have the ability to direct you to a place that provides you with whatever the alert pertained to. For example, you receive a notification about a new menu item at your favorite restaurant. When you open the notification, you are directed to a brief write-up and a few images that describe the new dish.