Sorry, the headline got truncated...
Taser adds mobile phone monitoring tool to its arsenal
Thing is, one of the fundamental assumptions is that the kid's phone is the one provided by the parent and loaded up with this special spyware-ish application. In other words, the kid is old enough to be 'sexting', but young and stupid enough to be unaware that she can simply purchase another phone for $50 and tell Daddy to stick his 'Taser Phone' up his aresenal.
It's a pretty thin market slice... Perhaps not of those idiot parents that would be stupid enough to sign-up, but of the children that are old enough to need the service and young enough not to instantly bypass it by any of a dozen methods.
Another false assumption made by techno-dummies is that "not everyone will have the technical skills to be able to bypass it." The mistake here is forgetting about, oh, what's it called? Oh yeah, the Internet.
All the kid has to do is Google the correct search terms, download the application, and follow the instructions. And they can do these steps at their friend's house.
The good news is that the service will take cash from moronic parents, provide it to Taser International, and they'll (sooner or later) pass it along to victims (or their surviving families) of the X26 tasers. It's a good cash flow pattern.