Earlier today I had a rather interesting discussion about parental control regarding internet access and about how to control/automate /monitor this. My own conclusion so far: there's no way to control this. The only solution seems to be PDPI (Parental Deep Packet Inspection, the only accepted type of DPI

So...
I'm looking for a way to control the time for specific users to be online on the Internet. To be more specifically: the time they spend on certain websites they visit, per user, per DOW (day of week), time slot, regardless of the local device or OS they use (laptop, tablet, PC, TV, Media Player / XP, Vista, W7, Android, IOS, etc). Has anyone ever seen or found a solution for this? And if not, have you ever wondered why (not)?