We're going to demonstrate this sticker-type functionality by building an app that lets you add beacon profiles to a local database, and when the beacon is more than two meters away, the app shows a push notification.

Our companion app already includes three beacon profiles for the important things we might forget, which are listed in the following table:

The idea behind our app is that we never leave anything important behind. This means that we need to send a notification if the app isn't active and a beacon moves out of range or present an alert if the app is running at the time we lose the beacon.