For the past two years, Mandie Snyder, an accountant near Spokane, Washington, has been “monitoring” her daughter. With a handy tech tool known as mSpy, Snyder is able to review her 13-year-old’s text messages, photos, videos, app downloads, and browser history.

She makes no apologies for it. Last summer, she says, she was able to intervene when she discovered her daughter was texting her boyfriend to plan a sexual rendezvous. “I know my daughter isn’t as naïve as I was at her age, with the plethora of ways to socially interact in today’s world,” Snyder says. “As a parent of a teen, this age of technology scares me.”

But while technology might present terrifying new ways for kids to get into trouble, it also provides new ways for parents to watch their every move.