▁feder ative ▁unit - iss ued ▁identity ▁card ▁include ▁a ▁reference ▁to ▁the ▁R G ▁number ▁of ▁the ▁feder ative ▁unit ▁that ▁issued ▁the ▁identity ▁card . ▁A ▁standard ▁feder ative ▁unit - iss ued ▁ID ▁is ▁required ▁to ▁obtain ▁a ▁pass port , ▁professional ▁ID , ▁driver ' s ▁license ▁or ▁any ▁other ▁kind ▁of ▁substitute ▁ID . ▁Once ▁an ▁individual ▁is ▁registered ▁with ▁an ▁R G , ▁they ▁can ▁use ▁a ▁substitute ▁document ▁to ▁register ▁in ▁any ▁feder ative ▁unit . ▁ ▁Portuguese ▁citizens ▁Since ▁Dec ree ▁No . ▁ 7 0 . 3 9 1 ▁in ▁ 1 9 7 2 , ▁Portuguese ▁citizens ▁benef iting ▁from ▁equal ▁citizens hip ▁status ▁are ▁el ig ible ▁for ▁regular ▁Brazil ian ▁identity ▁cards . ▁They ▁enjoy ▁a ▁reci pro cal ▁special ▁reg imen ▁in ▁recognition ▁of ▁Brazil ▁and ▁Portugal ' s ▁special ▁relationship . ▁They ▁bear ▁the ▁writing ▁Nacional idade ▁Portug ues a ▁- ▁Dec re to ▁n º ▁ 7 0 . 3 9 1 / 7 2 , ▁meaning ▁" Port ug uese ▁national ity ▁- ▁Dec ree ▁No . ▁ 7 0 . 3 9 1 / 7 2 ". ▁ ▁Future ▁Reg istro ▁de ▁Ident idade ▁Civil ▁( R IC ) ▁ ▁Federal ▁Law ▁ 9 , 4 5 4 / 1 9 9 7 ▁called ▁for ▁the ▁mer ging ▁of ▁the ▁feder ative ▁unit - level ▁registration ▁systems ▁into ▁a ▁un ified ▁registry . ▁This ▁will ▁likely ▁require ▁mer ging ▁the ▁R G ▁numbers ▁with ▁the ▁new