Claims:WE CLAIMS
1. A method of authenticating a user on an electronic device, the method comprising:
accessing, by an authentication device, a primary Personal Identification Number (PIN) associated with the user, wherein the primary PIN comprises at least one alpha-numeric character;
displaying, by the authentication device, a plurality of primary alpha-numeric characters associated with a plurality of secondary alpha-numeric characters, wherein each secondary alpha-numeric character is associated with a color, further wherein the plurality of primary alpha-numeric characters comprise the plurality of characters associated with a primary PIN;
receiving, by the authentication device, a dynamic PIN, comprising a combination of one or more secondary alpha-numeric characters and one or more colors, from the user;
authenticating, by the authentication device, the user, by comparing the dynamic PIN with one or more secondary alpha-numeric characters and one or more colors associated with the primary PIN.

2. The method of claim 1, wherein the primary PIN is defined by the user.

3. The method of claim 1, further comprising providing an alpha-numeric keypad to the user to input the dynamic PIN, wherein each alpha-numeric character associated with the keypad is displayed with a color.

4. The method of claim 3, wherein the color associated with each alpha-numeric character changes after a predefined time period.

5. The method of claim 1, wherein the association between the plurality of primary alpha-numeric characters and the plurality of secondary alpha-numeric characters changes periodically.

6. The method of claim 1, wherein the color associated with each secondary alpha-numeric character changes periodically.
7. An authentication device for authenticating a user on an electronic device, comprising:
a processor; and
a memory storing instructions that, when executed by the processor, causes the processor to:
access a primary Personal Identification Number (PIN) associated with the user, wherein the primary PIN comprises at least one alpha-numeric character;
display a plurality of primary alpha-numeric characters associated with a plurality of secondary alpha-numeric characters, wherein each secondary alpha-numeric character is associated with a color, further wherein the plurality of primary alpha-numeric characters comprise the plurality of characters associated with a primary PIN;
receive a dynamic PIN, comprising a combination of one or more secondary alpha-numeric characters and one or more colors, from the user; and
authenticate the user, by comparing the dynamic PIN with one or more secondary alpha-numeric characters and one or more colors associated with the primary PIN.

8. The authentication device of claim 7, wherein the instructions further comprise instructions to provide an alpha-numeric keypad to the user to input the dynamic PIN, wherein each alpha-numeric character associated with the keypad is associated with a color.

9. The authentication device of claim 8, wherein the instructions include the instruction to change the color associated with each alpha-numeric character after a predefined time period.

10. The authentication device of claim 7, wherein the instructions further comprise the instruction to change the association between the plurality of primary alpha-numeric characters and the plurality of secondary alpha-numeric characters periodically.

11. The authentication device of claim 7, wherein the instructions further comprise the instruction to change the color associated with each secondary alpha-numeric character periodically.

Dated this 13th day of September 2016

R Ramya Rao
Of K&S Partners
Agent for the Applicant
, Description:TECHNICAL FIELD
The present disclosure relates generally to user authentication. More specifically, it relates to a system and method for authenticating a user on an electronic device using a dynamically created Personal Identification Number (PIN).