Abstract: According to one embodiment, electronic device includes: display controller; user presence determination module; user authentication module; and controller. The user presence determination module determines presence of a user based on image data received from the camera while dominating access to a camera. The user authentication module dominates access to the camera, if the display is put in a screen lock state and to perform a user authentication based on the image data. The controller turns off the display if the user present determination module determines that the user is absent and while the display has not been put in the screen lock state, and to cause the user presence determination module to release the access to the camera and to put the display in the screen lock state before turning on the display if it is determined after the display is turned off that the user is present.

Abstract: An electronic apparatus includes: a pointer configured to allow specifying a first object from a plurality of objects displayed on a display screen; and an overlapping object display module configured to detect a second object overlapping with the first object when the first object is specified by the pointer and display the second object on the display screen in a mode in which the second object is allowed to be specified.

Abstract: According to one embodiment, an information processor includes a display module, an acceleration detector, a knocking operation detector, a specifying module, and a processing module. The display module displays information. The acceleration detector detects acceleration generated in the information processor. The knocking operation detector detects that a knocking operation is performed on the information processor based on a detection result of the acceleration detector. The specifying module specifies, among sides of a graphical user interface (GUI) displayed on the display screen of the display module, a side on which the knocking operation detected by the knocking operation detector is performed. The processing module performs a process associated in advance with the side of the GUI specified by the specifying module.

Abstract: According to one embodiment, an authentication method includes performing a verification process includes extracting a face region from an image input from a camera photographing a person, reading first facial characteristic data from the extracted face region, and reading second facial characteristic data associated with personal identification data representing the specific person corresponding to the detected first facial characteristic data, acquiring hand-shape transition pattern data showing transition of a hand shape and associated with the personal identification data associated with the second facial characteristic data, extracting a hand region from the image input from the camera, detecting a transition of a hand shape from the extracted hand region, and determining whether the hand-shape transition pattern data represents the detected transition of the hand shape.

Abstract: An authentication apparatus for authenticating an authentication target of a user's face includes: a display configured to display an image to authentication target; a camera arranged in the vicinity of the display to take an image of the authentication target; an assist unit configured to output a guide image instructing a user a direction in which to turn in accordance with an attribute of the authenticating; and an image synthesis unit configured to synthesize the image taken by the camera and the guide image output from the assist unit to display a synthesized image on the display.