Patent Document ID: 9292669
Application ID: 13350348

Base Claim:
1. A method to authenticate a user in an electronic device, the method comprising: detecting a request for an authentication function; in response to detecting the request for the authentication function, displaying a first string, wherein the first string comprises at least one user-defined number or character in a storage unit and at least one randomly selected number or character; receiving a second string including at least one user-input number or character via a touch screen; determining whether the at least one user-input number or character in the received second string is in a predefined one to one correspondence with the at least one user-defined number or character in the displayed first string; and determining a user authentication when the at least one user-input number or character in the received second string is in the predefined one to one correspondence with the at least one user-defined number or character in the displayed first string, wherein the user authentication is determined regardless of the others except at least one user-input number or character in the predefined one to one correspondence with the at least one user-defined number or character in the displayed first string.

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Claim 3:
3. The method of claim 1 , further comprising prompting a user to input numbers or characters in boxes using the one to one correspondence with the numbers or characters of the displayed first string.