A law proposal was introduced in the House of Representatives of the Netherlands in 2009 and amended in 2010 which would ban prostitution by people younger than 21. Prostitutes are required to register; they receive a registration pass with a photograph and a registration number, but no name or other personal data. Clients are required to check this pass. In addition to municipal rules a national rule is introduced requiring sex companies to have a license, including prostitution companies such as brothels and escort agencies, but also, for example, adult movie theaters. Under the proposed amendments, an advertisement of an individual prostitute should contain his or her registration number, an advertisement of a sex company should contain its license number. The premises for public access of a sex company (if any) should have on the outside a sign showing that the company is licensed, while inside a copy of the license has to be displayed.