https://www.techradar.com/news/this-ios-12-feature-could-help-save-your-life-without-threatening-your-privacy

The iOS 12 change list now includes a potentially life-saving upgrade in the US, one that will allow first responders to pinpoint your whereabouts in an emergency.

Apple's software update will automatically and securely share their location data with 911 dispatchers in an effort to improve accuracy and reduce response times.