Sprint Guardian has been in the oven for some time now -- we actually heard about it during our interview with John Tudhope and David Owens at CTIA 2012 -- but now, at long last, the service is available. Concerned parents nationwide can locate Guardian on "many" Sprint Android-powered phones through the Sprint Zone. The program itself features apps from Safely and Lookout, enabling parents to "protect their phone-carrying children through location checks and limits on texting while driving or at school." In other words, you can prevent a child's phone from being able to call or text whilst the user is driver, and lost phones can be located more easily. Naturally, such luxuries don't come free: Sprint Mobile Controls, Sprint Drive First and Sprint Family Locator are available as a Family Safety bundle for $9.99 per month for up to five lines on the same account. Or, you know, just give your youngin' a Hamilton each month for not acting like a lunatic with phone in hand.