An electronic device includes a user interface. The user interface can include a display. One or more sensors, which may include an imager, can be included as well. One or more processors are operable with the user interface and the one or more sensors. The one or more processors determine, from signals from the one or more sensors, whether one or more persons are within a predefined environment of the electronic device. Where only one person is within the predefined environment, the one or more processors request entry of a user authentication code at the user interface to authenticate the one person as an authorized user of the electronic device. However, where two or more persons are within the predefined environment, the one or more processors preclude entry of the user authentication code at the user interface. This prevents nefarious actors from seeing entry of the user authentication code.