"The Play Store offers over one million apps - many of which are created to be used in specific locations or situations. The right app at the right moment lets you get more done. For example, at a store, you may want a barcode scanner to check prices and reviews for an item. Or when you're at a museum, an audio tour would enhance the experience as you make your way around the exhibits.
But, getting the right apps at the right time can be tough if you don’t already know about them. So, we're introducing a new Android feature called Nearby, which notifies you of of things that can be helpful near you."
So when I want to send out a broadcast (which is all the time, daily) I keep my beacon in my purse or pocket and go to a concert, the mall, a baseball game, etc. and let this tiny device do all the work.