Input device and method for protecting input information from exposure

An input method for protecting input information from exposure, the method comprising:

• receiving keystroke inputs from a user;
• determining whether a predetermined first number of keystroke inputs are received from the user by counting the keystrokes;
• generating a tactile signal only when the determining indicates that the predetermined first number of keystroke inputs have been received from the user,
• wherein the tactile signal is regarding an instruction to the user indicating when the user should input at least one predetermined input;
• and
• accepting a next immediate input entered by the user as user input information when the processor generates the tactile signal,
• wherein the accepting does not accept the next immediate input entered by the user as user input information when the processor does not generate the tactile signal, and
• wherein the accepting is operable to check whether the user input information is equal to predetermined input information.

A non-transitory computer-readable storage medium encoded with processing instructions for causing a processor to execute an input method for protecting input information from exposure, the method comprising:

• receiving keystroke inputs from a user;
• determining whether a predetermined first number of keystroke inputs are received from the user by counting the keystrokes;
• and
• generating a tactile signal only when the determining indicates that the predetermined first number of inputs have been received from the user,
• wherein the tactile signal is regarding an instruction to the user indicating when the user should input at least one predetermined input;
• and
• accepting a next immediate input entered by the user as user input information when the processor generates the tactile signal,
• wherein the accepting does not accept the next immediate input entered by the user as user input information when the processor does not generate the tactile signal, and
• wherein the accepting is operable to check whether the user input information is equal to predetermined input information.