The other system, the "Cadastro de Pessoas Físicas" (CPF) is federal and supposedly unique (barring fraud), but it was created originally for purposes of taxation (a related system is used for companies, which is called Cadastro Nacional de Pessoas Jurídicas - CNPJ). One, the other or both numbers are required for many common tasks in Brazil, such as opening a bank account or getting a driver's license. The RG system is more widespread, but its shortcomings have led to debate about merging both systems into a new one, which would be based around the CPF.