@djsumdog @coolboymew The best solution for any parent is to not set up any user accounts on any of the computers at home and instead give their kids one of those flash-drives with a custom Linux distro that has a whitelist of approved websites and software (there are companies that sell them if you can't make them yourself). There is not much to work around if you can only use the computer with said drive and a whitelist. Though the kid may have a tech-savvy friend who may give them a Linux flash drive without a whitelist, but that's probably the only loophole.