Abstract:
An operation method of an electronic device is provided. The operation method includes registering, as reference signature data, at least one handwritten signature inputted into the electronic device by a user input means, authenticating an inputted handwritten signature by comparing data of the inputted handwritten signature with the registered reference signature data when the handwritten signature is inputted by the user input means, and further registering, as reference signature data, handwritten signature data regarding the inputted handwritten signature when the inputted handwritten signature is authenticated normally as a result of the authentication.
Abstract:
A link structure includes a first link, a second link having an end that is connected to an end of the first link, a third link having an end that is connected to the end of the first link, and provided on a portion of the second link, a first rotary shaft partially provided in the first link, a first actuator configured to rotate the first link about the first rotary shaft; a second rotary shaft partially provided in the second link, the second rotary shaft being different from the first rotary shaft, and a second actuator configured to rotate the second link about the second rotary shaft, the first and second actuators being provided in the first link.