credential [credentials](document of authority) noun [UK: krə.ˈden.ʃl̩] [US: krə.ˈden.tʃl̩]
ID card(identity card) noun [UK: ɪd kɑːd] [US: ˈɪd ˈkɑːrd]
identification [identifications](a document or documents serving as evidence of a person's identity) noun [UK: aɪ.ˌden.tɪ.fɪˈk.eɪʃ.n̩] [US: aɪ.ˌden.tə.fəˈk.eɪʃ.n̩]