Secure user authentication is provided by leveraging the use of quantum keys, steganography and random user keys/passcodes. Random user passcodes limit both the entity's control over the user and potential exposure of the passcode to wrongdoers. From a security standpoint, use of quantum keys and quantum communication channels heightens security during transmission of keys, such that if a wrongdoer would attempt to hack the transmission, the quantum sequence would break, which would not only prevent the hack but also result in remedial actions, such as preventing the authentication-requiring event, providing alerts and the like. Further, use of steganography also heightens security by preventing exposure to the keys during transmission and/or while the authentication process is occurring on the display of the user's mobile device.