Gatwick Airport now has 2,000 beacons for indoor navigation
Complex indoor environments such as airports and shopping malls can be a nightmare to find your way around. And while Google is eyeing smartphones with 3D sensors as one potential fix for places GPS won’t accurately reach, another approach is to kit out an interior with lots of Bluetooth beacons — giving smartphone users located-locked pings to fix onto to know where they are.
Read more here: https://techcrunch.com/2017/05/25/gatwick-airport-now-has-2000-beacons-for-indoor-navigation/
I've always wondered when they would come up with indoor GPS. Smh. The number of times I've gotten lost in an indoor/outdoor mall its ridiculous.