Method of authenticating user of electronic device, and electronic device for performing the same

1. An electronic device comprising:

a display;

a camera;

one or more processors; and

a memory storing one or more programs including instructions which, when executed by the one or more processors, cause the one or more processors to:

while the electronic device displays a first locking screen including first information in a locked state:

control to detect that the electronic device is lifted,

in response to detecting that the electronic device is lifted while the electronic device is in the locked state:

control to display a second locking screen including the first information and second information on the display while the electronic device maintains in the locked state;

control to obtain an image from the camera;

control to detect a face included in the obtained image;

control to perform an authentication of a user based on the face being detected in the obtained image;

based on performing the authentication of the user, control the display to display information related to the authentication of the user on the second locking screen, and

based on a result of the authentication being successful, control to switch a state of the electronic device from the locked state to an unlocked state, and control the display to display an unlocked screen,

wherein the first locking screen provides the first information on a black screen for saving power, and

wherein the second locking screen provides the first information and the second information on a screen different from the black screen.

2. The electronic device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the one or more processors to, based on the result of the authentication being unsuccessful, maintain the electronic device in the locked state.

3. The electronic device of claim 1 , wherein the authentication of the user is performed based on the face and at least one eye being detected in the obtained image.

4. The electronic device of claim 3 , wherein the at least one eye comprises an opened eye.

5. The electronic device of claim 1 , wherein, based on a motion of lifting the electronic device not being detected for a predetermined time, the one or more processors control to maintain the locked state.

6. The electronic device of claim 1 , wherein the first information and the second information are different.

7. The electronic device of claim 1 , wherein the second locking screen further includes additional information in comparison with information included in the first locking screen.

8. The electronic device of claim 1 , wherein the first locking screen is displayed in a first power state corresponding to a power saving state.

9. The electronic device of claim 8 , wherein the second locking screen is displayed in a second power state different from the first power state.

10. A method of an electronic device, the method comprising:

while the electronic device displays a first locking screen including first information in a locked state, detecting that the electronic device is lifted;

in response to detecting that the electronic device is lifted while the electronic device is in the locked state, displaying a second locking screen including the first information and second information on the display while the electronic device maintains in the locked state, obtaining an image from a camera, detecting a face included in the obtained image, performing an authentication of a user based on the face being detected in the obtained image, and based on performing the authentication of the user, displaying information related to the authentication of the user on the second locking screen; and

based on a result of the authentication being successful, switching a state of the electronic device from the locked state to an unlocked state, and controlling the display to display an unlocked screen,

wherein the first locking screen provides the first information on a black screen for saving power, and

wherein the second locking screen provides the first information and the second information on a screen different from the black screen.

11. The method of claim 10 , further comprising, based on the result of the authentication being unsuccessful, maintaining the electronic device in the locked state.

12. The method of claim 10 , wherein the authentication of the user is performed based on the face and at least one eye being detected in the obtained image.

13. The method of claim 12 , wherein the at least one eye comprises an opened eye.

14. A non-transitory computer-readable storage medium configured to store one or more computer programs including instructions that, when executed by at least one processor of an electronic device, cause the at least one processor to control for:

while the electronic device displays a first locking screen including first information in a locked state, detecting that the electronic device is lifted;

in response to detecting that the electronic device is lifted while the electronic device is in the locked state, displaying a second locking screen including the first information and second information on the display while the electronic device maintains in the locked state, obtaining an image from a camera, detecting a face included in the obtained image, performing an authentication of a user based on the face being detected in the obtained image, and based on performing the authentication of the user, displaying information related to the authentication of the user on the second locking screen; and

based on a result of the authentication being successful, switching a state of the electronic device from the locked state to an unlocked state, and controlling the display to display an unlocked screen,

wherein the first locking screen provides the first information on a black screen for saving power, and

wherein the second locking screen provides the first information and the second information on a screen different from the black screen.

15. The non-transitory computer-readable storage medium of claim 14 , wherein the instructions, when executed by the at least one processor, further cause the at least one processor to control for, based on the result of the authentication being unsuccessful, maintaining the electronic device in the locked state.

16. The non-transitory computer-readable storage medium of claim 14 , wherein the authentication of the user is performed based on the face and at least one eye being detected in the obtained image.

17. The non-transitory computer-readable storage medium of claim 16 , wherein the at least one eye comprises an opened eye.