Patent ID: 8010797

Claim:
An electronic apparatus that accepts password input, comprising: a displaying unit that includes a plurality of display positions, the display positions displaying a symbol string of a plurality of digits, and displays candidate symbols for inputting a password at each of the display positions; an input unit that includes a plurality of select buttons corresponding to the display positions of the displaying unit, and selects the candidate symbols by each operation of the select buttons corresponding to the candidate symbols displayed on the display positions; and a processing unit that generates a plurality of the candidate symbols to display the generated candidate symbols at the display positions of the displaying unit randomly, and invalidates the operation of at least one of the select buttons of the input unit, wherein the processing unit ignores the operation of the select button, the operation of which is invalidated, accepts selection of the candidate symbols by the operation of the select buttons, the operation of which is not invalidated, defines the candidate symbols which are accepted as an input password, and determines whether the input password is correct or not.