In theory, this will rid of the need to search Google Play if you need an app while out and about, letting Google do all the suggesting and searching for you. For example, if you're in a CVS Pharmacy, Google will ping the CVS Pharmacy app to your notifications. You can then download the app and beam photos directly to their photo kiosk.
Download the United Airlines app for free in-flight entertainment while you wait at the gate, before you board your flight.
It's not just apps that will be utilized with the Nearby feature. Select Google devices, like Google Cast and Android Wear smartwatches, will allow you to tap a notification from your smartphone when you're near them to set up new devices.
Google says Nearby will be available for Android 4.4 KitKat devices and above, made available through an upcoming Google Play Services release. The feature is opt-in by turning on Bluetooth and Location settings.
iOS 8 brought a similar feature to Apple's mobile platform, relaying apps for nearby stores through iOS' lock screen.