How would you keep them away from free Wi-Fi all over the place? Or, from giving fifty bucks a month to their neighbor? Or from a phone plan that has next to

How would you keep them away from free Wi-Fi all over the place? Or, from giving fifty bucks a month to their neighbor? Or from a phone plan that has next to no background check: buy a cheap SIM from a convenience store, activate with credit card and you have data.