Method and apparatus for online signature vefication using proximity touch

A method for authenticating a signature input by the user, based on at least one of a direct touch event and at least one of the proximity-touch event occurs on the touch input unit of the device, on the basis of the step of generating the signature data, the generated signature data, service providing method according to an embodiment of the basis of the matching degree of the feature of extracting a feature of an input signature, and a reference to the group characteristics of the inputted sign stored user signature present and determining whether the authentication invention It is provided.