Electronic device and method for controlling the same

The electronic device of 4, wherein:

• the first biometric authentication comprises facial recognition of a user;
• the second biometric authentication comprises palm recognition of the user;
• and
• the third biometric authentication comprises fingerprint recognition of the user.

An electronic device configured to perform biometric authentication for executing a function, the device comprising:

• a memory configured to store information;
• a plurality of sensors configured to receive biometric information;
• a controller configured to:
• receive contextual information from one or more of the plurality of sensors;
• receive first biometric information from a first sensor of the plurality of sensors;
• perform a first biometric authentication comprising a generated similarity value between the received first biometric information and first biometric user information stored in the memory, wherein the first biometric authentication uses a first comparison threshold which varies based on the received contextual information;
• when the first biometric authentication is successful, execute the function according to the successful authentication;
• when the first biometric authentication is unsuccessful, perform a second biometric authentication using a second biometric information received from a second sensor of the plurality of sensors;
• and
• when a result of the first biometric authentication cannot be determined, select another biometric authentication from a plurality of biometric authentication and perform the selected another biometric authentication.

A method of controlling an electronic device that performs biometric authentication for executing a function, the method comprising:

• receiving contextual information from one or more of a plurality of sensors;
• receiving first biometric information from a first sensor of the plurality of sensors;
• performing a first biometric authentication comprising a generated similarity value between the received first biometric information and first biometric user information stored in a memory of the electronic device, wherein the first biometric authentication uses a first comparison threshold which varies based on the received contextual information;
• when the first biometric authentication is successful, executing the function according to the successful authentication;
• when the first biometric authentication is unsuccessful, performing a second biometric authentication using a second biometric information received from a second sensor of the plurality of sensors;
• and
• when a result of the first biometric authentication cannot be determined, performing a third biometric authentication using a third biometric information received from a third sensor of the plurality of sensors.