Re: "off limits until kids turn 16"
It opens up a whole world of new problems to the situation that have been kicking around for at least 20 years.
Presenting ID cards etc. is obviously a horrible idea, from the perspectives of: security of transmission, ability to bind an ID to an actual person on the end of the piece of wet string, sharing sensitive info with a bunch of numpties who will keep it on file and disclose it since the numpties can't spell security (who only really needed to record the fact that ID was shown not to keep it).
The usual starting point is that "I'm going to trust Fred because Jane trusts Fred and I trust Jane". Complicate that by applying the level of trust in that relationship, and match that to the sensitivity of the transaction and the required level of trust for that. On top of that add identity binding, how closely is the trust bound to the credentials provided. If I log into my Canadian Tax account then it will invite me to log-in to a selection of other parties who I may deal with - such as my bank - they strongly trust me so logging in pivots that trust to me accessing my taxes. Age assertions can work the same way but it is a lot of (expensive) faff. This level of diligence is unlikely.
So, keep in mind that a minimum (think small, no very small) level of demonstrable effort will go into any age requirement as it does today, and all this will achieve virtually nothing in preventing a well motivated spotty teen finding ways to access their porny peccadillo sites.
Biting the hand that feeds IT
