Apparatuses and methods are disclosed for identity authentication. An exemplary method may include obtaining biometric information for authentication collected by a terminal, and identity information sent by the terminal. The method may also include obtaining prestored biometric information corresponding to the identity information. The method may further include determining whether the biometric information for authentication matches the prestored biometric information. If yes, the method may include determining that the identity authentication is successful. Otherwise the method may include determining that the identity authentication is not successful.