SHOULDER-SURFING RESISTANT PASSWORD INPUT METHOD FOR SMART PHONES

摘要

Disclosed is a shoulder-surfing resistant password input method for a smartphone. The password input method includes the steps of: displaying a password input screen with an upper side on which a keyboard for inputting characters is arranged on the screen of a user terminal; and displaying the character inputted through the keyboard on the lower side of the screen which is a region except the arrangement region of the keyboard. At this time, in the step of displaying the character inputted through the keyboard, a unit character is alternatively displayed on the left and right sides of the lower side of the screen when the user inputs the unit character corresponding to the password.