Google Maps Gains Tunnel Navigation
Google has quietly added optional support for Bluetooth beacons to its Google Maps app for Android. This feature lets the app know its location in tunnels, where GPS signals don't reach. Google's Waze subsidiary has already deployed these beacons in tunnels in cities including New York City, Chicago, and Boston. The feature is still off by default; users must go into the app settings and enable "Bluetooth tunnel beacons" under "Navigation settings" to enable the feature. The iOS version of the app does not yet offer this option.