Apple is still trying to begin to (because they aren't right now) compete with Google and their far superior mapping service, where the Cupertino-based company have just acquired an indoor GPS tracking startup, WiFiSlam.
The Wall Street Journal has confirmed that Apple have acquired the startup, who specializes in WiFi-assisted indoor GPS functionality for smartphones. What makes this news interesting is that the company was reportedly founded by a few ex-Google staff a couple of years ago, with one of their investors included a Google employee. A stronger confirmation on this is the fact that any WiFiSlam-related apps have been removed from the Google Play Store.
Apple reportedly coughed up $20 million for the startup, but no confirmation on this has materialized. I'm sure we'll see more on this in the future.