Other important identity documents include a passport, an official birth certificate, an official marriage certificate, cards issued by government agencies (typically social security cards), some cards issued by commercial organisations (e.g., a debit or credit card), and utility accounts. Often, some combination of identity documents is required, such as an identity document linking a name, photograph and signature (typically photo-ID in the form of a driver licence or passport), evidence of operating in the community, and evidence of a current residential address.