Abstract: A character input device is provided with an operation unit that accepts key input and displays and accepts selection of a prediction candidate according to the result of the key input, and a character input determining unit that determines an input character, using the result of the key input or the selection result of the prediction candidate. Also, the character input determining unit executes fingerprint authentication at the time of accepting the key input or the time of selecting the prediction candidate.

Abstract: An input device includes an input unit configured to receive an input corresponding to a pressed position on a screen of a display; a display control unit configured to display a key image associated with a keyboard on the screen of the display in a manner superimposed on a background image; and an input mode setting unit configured to set, in response to an input for selecting an input mode received by the input unit, an input mode of the input unit to a first input mode to receive a character input based on the key image or to a second input mode to receive an input for changing a display form of the background image in accordance with the received input.

Abstract: A character input device is provided with an operation unit that accepts key input and displays and accepts selection of a prediction candidate according to the result of the key input, and a character input determining unit that determines an input character, using the result of the key input or the selection result of the prediction candidate. Also, the character input determining unit executes fingerprint authentication at the time of accepting the key input or the time of selecting the prediction candidate.

Abstract: A character input device is provided with an operation content determination unit and a display control unit. The operation content determination unit determines the content of an operation on a display surface. The display control unit selects one of a keyboard screen for character input and a cursor operation screen for character editing, and displays the selected screen on the display surface. The operation content determination unit instructs the display control unit to switch from the keyboard screen to the cursor operation screen, if the operation content is a multi-touch.