Apparatus and method for controlling security of electronic device

1. An electronic device comprising:

a touch screen display; and

at least one hardware processor operatively coupled to the touch screen display, configured to:

display a lock screen in a first size;

in response to detecting an input on the touch screen display, display an input range including a plurality of segments at a location of the touch screen display where the input is detected;

detect a first path associated with the detected input that is performed at least partially in the input range;

compare the first path to a second path stored in the electronic device; and

perform a function in response to detecting that the first path matches the second path,

wherein the input range is displayed in a second size smaller than the first size.

2. The electronic device of claim 1 , wherein the first path is generated from the location of the detected input.

3. The electronic device of claim 1 , wherein the at least one processor is further configured to hide the lock screen in response to the input.

4. The electronic device of claim 1 , wherein the second path is registered while the electronic device is in a security setting mode, and performing the function includes unlocking the electronic device.

5. The electronic device of claim 4 , wherein registering the second path includes:

detecting a first preliminary path that is associated with a first input performed in a first input range;

detecting a second preliminary path that is associated with a second input performed in a second input range, the second input range being different from the first input range; and

registering one of the first preliminary path and the second preliminary path as the second path when the first preliminary path matches the second preliminary path.

6. The electronic device of claim 1 , wherein detecting the first path includes detecting an order of at least two segments of the first path.

7. The electronic device of claim 1 , wherein the first path comprises at least one of a horizontal segment, a vertical segment, a diagonal segment, or intersecting segments.

8. The electronic device of claim 1 , wherein the at least one processor is further configured to adjust the input range while the detected input is being performed.

9. The electronic device of claim 1 , wherein the at least one processor is further configured to control a degree of display of the first path according to tan order of at least two segments of the first path.

10. The electronic device of claim 1 , wherein further comprising displaying the lock screen and displaying an error message when the first path does not match the second path.

11. A computer implemented method for use in an electronic device implemented using at least one hardware processor, the method comprising:

displaying a lock screen in a first size

in response to detecting an input, displaying an input range including a plurality of segments at a location of a touch screen display where the input is detected;

detecting a first path associated with the detected input that is performed at least partially in the input range;

comparing the first path to a second path stored in the electronic device; and

performing a function in response to detecting that the first path matches the second path,

wherein the input range is displayed in a second size smaller than the first size.

12. The method of claim 11 , wherein the first path is generated from the location of the detected input.

13. The method of claim 11 , further comprising hiding the lock screen in response to the input.

14. The method of claim 11 , wherein the second path is registered while the electronic device is in a security setting mode, and executing the function includes unlocking the electronic device.

15. The method of claim 14 , wherein registering the second path includes:

detecting a first preliminary path that is associated with a first input performed in a first input range;

detecting a second preliminary path that is associated with a second input performed in a second input range, the second input range being different from the first input range; and

registering one of the first preliminary path and the second preliminary path as the second path when the first preliminary path matches the second preliminary path.

16. The method of claim 11 , wherein detecting the first path includes detecting an order of at least two segments of the first path.

17. The method of claim 11 , wherein the first path comprises at least one of a horizontal segment, a vertical segment, a diagonal segment, or intersecting segments.

18. The method of claim 11 , further comprising adjusting the input range while the detected input is being performed.

19. The method of claim 11 , wherein displaying an indication of the first path on a touch screen display includes controlling a degree of display of the first path according to an order of at least two segments of the first path.

20. The method of claim 11 , wherein the detected input includes at least one of a sliding gesture.