What is SIS and how does it work?

Requests to be submitted in Hungary
In Hungary, anyone who wishes to know if his/her data has been recorded in the SIS, or wishes to ask for correction or deletion of his/her data should contact any government office, police station or any Hungarian Embassy or Consulate and fill in form (a request for information) to be transferred to the SIRENE Bureau of the Hungarian National Police Headquarters:

Address: 1139 Budapest, Teve u. 4-6.
Tel.: 443-5861
Fax: 443-5815
E-mail: nebek@nebek.police.hu

The SIRENE Bureau has the right to refuse requests but is obliged to inform the person about the fact of and the reason for denial. Should you find that the SIRENE Bureau is not adequately responsive to your request, you may turn to the Hungarian National Authority for Data Protection and Freedom of Information:

National Authority for Data Protection and Freedom of Information
Postal address: 1363 Budapest, Pf.: 9.
Office address: 1055 Budapest, Falk Miksa utca 9-11.
Tel: +36 1 391-1400
Email: ugyfelszolgalat@naih.hu
Web: http://naih.hu