Parenting is tough to begin with, but add a smartphone-using, texting, emailing and Internet-surfing teen on top of that, and there's a whole new set of digital rules that apply. Keeping tabs on your kids at home can be done through communication, Internet filters and other PC-based tools (hopefully), but it becomes a little more difficult when they venture outside. SEE ALSO: 10 Mom Blogs Full of Inspiring Advice Tracking your kids with GPS is definitely a debatable topic.