A point of interest, or POI, is a specific point location that someone may find useful or interesting. An example is a point on the Earth representing the location of the Space Needle, or a point on Mars representing the location of the mountain, Olympus Mons.(from wikipedia)
The term is widely used in cartography, especially in electronic variants including GIS, and GPS navigation software. In this context the synonym waypoint is common.
iPhoneARKit is a great tool for developing POI (Point Of Interest) apps on iPhone. We've just done the first demo based on this library. It's a simple application to detect POI locations in camera view and show related information (in the context of this demo - is shops with coupons)
Many business ideas comes from this, right?