How is this going to even work? It sounds like it’s certifying particular devices, but there’s no way to certify the age of the actual user.
If you watch the video you have to enter your passport or government ID number into porn websites that will verify your age. If you don't want to enter your passport or id number in random porn websites then you will need to go to a store and buy a "voucher", and you can enter the porn voucher number in the website to access it.
This is going to be a phisher's paradise.