Recently I had a document certified by notary public and they kept copies of all my documents. Are they required to keep copies of the documents and identification details I supplied?

It is a legal obligation on Notaries that they retain copies of documents they action and any identification documents used for that purpose. The requirement of the international convention for Notary actions is that they can be independently verified by the overseas person or authority receiving the documents.  This can be done by contacting the Notary direct or through our Department of Internal Affairs who are the official government department responsible for authenticating New Zealand Notaries.

As part of that convention/process the notary has to be able to compare the document held by the recipient against the copy retained by them in their records.

Be assured your documents and the information contained in them is otherwise retained confidentially by the Notary under the legal obligations upon them both as a Notary and as a New Zealand Lawyer.  They can only be used by the Notary for that verification process and cannot be disclosed or used by them for any other purpose.