Since Bluetooth connectivity follows a device - to - device communication pattern, this functionality is exceptional for identifying who is with your pooch any time. (mypetneedsthat.com)
The update is rolled out for following devices: (maktechblog.com)
Unless, of course, you're one of those people who have followed the devices into rivers, onto train tracks, down impassable wilderness trails, or right into another country. (discovermagazine.com)