My daughters were secretly tracking my location and I had no idea. I'm actually relieved they care about where I am.

The author and her daughters all track each other Courtesy of the author I didn't have a smartphone when my kids were teens, and they paid their own cell bills. When I finally bought an iPhone, I didn't ask for their locations, but I learned they were tracking me. With my daughters now in their 20s, we all decided to share our whereabouts. "Mom, why r u not at yoga?" texted my 19-year-old Annie. "What? How did you know I'd been at yoga?" I wrote back, using my right index finger to whip ou...