I was unaware of this directive which has been recently implemented in the NL until someone pointed it out. For everyone based in the EU, it might be handy to read up on how your country is implementing / regulating this directive.
Basically, it's a directive to protect minors accessing "harmful" content (eg porn), some countries like the UK and NL have implemented it already.
Read about the UK directive:
http://atvod.co.uk/downloads/who_should_notify.pdf
Read about the NL directive:
http://www.cvdm.nl/dsresource?objectid=10691&type=org
Read about the DE directive:
http://www.alm.de/fileadmin/Download...ch_updated.pdf
To know what institution in your country is responsible for regulating the EU directive:
http://ec.europa.eu/avpolicy/info_ce...dex_en.htm#reg