In the past there have been certain groups that have experienced problems obtaining valid identification documents. This was due to the initial process that was required to validate one's identity, unregulated security requirements by the commercial companies which issued them. Since July 2009, the Tax Agency has begun to issue ID-cards, which has simplified the identity validation process for foreign passport holders. There are still requirements for identity validation that can cause trouble, especially for foreign citizens, but the list of people who can validate one's identity has been extended.