A password entry device through which a password is entered, comprising: a touch panel displaying information; a first display control unit performing control operations to display a plurality of characters including characters that make up the password in a first area of the touch panel in a first style for representing characters; a tap determination unit determining which of the characters displayed in the first style by the first display control unit has been tapped; a second display control unit performing control operations to display the characters, which are determined by the tap determination unit that they were tapped, in a second area, which differs from the first area of the touch panel, in a second style, which differs from the first style; and a password-entry acceptance unit accepting the entry of the characters that make up the password with the characters displayed in the second style by the second display control unit; the password entry device further comprising a third display control unit performing control operations to display a third area on the touch panel, the third area displaying the characters that are selected from the characters displayed in the second style and make up the password, wherein the password-entry acceptance unit accepts the entry of the password that is input by dragging and dropping the characters from the second area to the third area; wherein the password-entry acceptance unit accepts the entry of the password that is input by dragging and dropping the characters in a different order from the order of the characters in the password; wherein when detecting a predetermined gesture, the second display control unit performs control operations to display the characters, which are represented in the second style, in the first style for a predetermined period of time; wherein the predetermined gesture includes double-clicking the characters; and wherein the second display control unit performs control operations to display all the characters as the same symbols in the second style. a touch panel displaying information; a first display control unit performing control operations to display a plurality of characters including characters that make up the password in a first area of the touch panel in a first style for representing characters; a tap determination unit determining which of the characters displayed in the first style by the first display control unit has been tapped; a second display control unit performing control operations to display the characters, which are determined by the tap determination unit that they were tapped, in a second area, which differs from the first area of the touch panel, in a second style, which differs from the first style; and a password-entry acceptance unit accepting the entry of the characters that make up the password with the characters displayed in the second style by the second display control unit; the password entry device further comprising a third display control unit performing control operations to display a third area on the touch panel, the third area displaying the characters that are selected from the characters displayed in the second style and make up the password, wherein the password-entry acceptance unit accepts the entry of the password that is input by dragging and dropping the characters from the second area to the third area; wherein the password-entry acceptance unit accepts the entry of the password that is input by dragging and dropping the characters in a different order from the order of the characters in the password; wherein when detecting a predetermined gesture, the second display control unit performs control operations to display the characters, which are represented in the second style, in the first style for a predetermined period of time; wherein the predetermined gesture includes double-clicking the characters; and wherein the second display control unit performs control operations to display all the characters as the same symbols in the second style.