Also this works very well in tandem with more traditional parent controls on the market, especially to curb late night cell use. What has been a conundrum for parents is though they can, through verizon and other carrier parent controls, shut off the cellular use of their teen's phone, teen's just move on to wifi. This trick enables you to shut this option off as well, without having to physically shut off your modem, thereby having to shut down your own use as well. As keeper of the password, you are in the driver's seat. Now if you're like me, some of you may have no idea how to change your modem password. So clearly there maybe a bit of a learning curve!! Find a smart technology person to teach you how to do this....other than your teen!
Who knows if this really works, but isn't Facebook always right???