PinSentry is an addon that will allow you to set a pin code that you can then force to be input when you play a particular video file or navigate into a given TV Show or Plugin. There is also an option to force the user to enter a pin when the system starts, and then restrict the amount of time the user is allowed each day.
Please read the wiki for more details:
You can install this addon from: Repository:URepo
To ask questions or comment about PinSentry, please use the forum at URepo.org
Note: The classifications for each country will be added on request (There are just too many to add all of them in one go - and pointless if no one is going to use them)
If you have found PinSentry useful and would like to help support future development and bug fixes, then please feel free to make a small donation.