18 is too soon, but you won't be able to stop them because they're considered legal adults. More seriously, even if I wanted them glued to a computer screen, I

18 is too soon, but you won't be able to stop them because they're considered legal adults. More seriously, even if I wanted them glued to a computer screen, I'd at least make them learn to use a keyboard and mouse. Electronics uses who are completely clueless how to do anything useful with a computer are a plague upon mankind.