For monitoring your child's activity you don't need anything complicated, just choose a simple keylogger. But of course it's a good solution only if your child is small, for teens you'll need to find the more technically advanced software.You can make a choice between hardware and software ones, they are the main types in this case. Your choice will depend on your certain needs, for example the hardware ones are very simple in using and a perfect choice for the small children, and the software ones are more technically advanced
https://keyboardtracer.com/get-started-guide/ , provide a remote access and work effectively hidden.