More to the article than the subject or this quote imply. Interesting read.
QuoteCombined with another major GPS platform known as SinoTrack that sells car trackers and smartwatches, the two researchers found that tens of millions of GPS tracker gadgets came from just three supply chains. All three, the researchers found in their analysis, had significant security flaws—in some cases as simple as a lack of authentication that allowed anyone to access any device—leaving children's watches vulnerable to tracking by a hacker, location disabling and spoofing, interception and spoofing of text and audio messages sent to them
https://www.wired.com/story/hackers-stalked-me-by-hijacking-a-smartwatch-for-kids/