METHOD FOR THE ELECTRONIC AUTHENTICATING OF A HANDWRITTEN SIGNATURE, CORRESPONDING MODULE AND COMPUTER PROGRAM

A method and apparatus are provided for electronically authenticating a handwritten signature of a user, entered on a writing surface via a writing instrument. The method includes acquiring, by the writing surface, at least one instant during the entering of the signature, of at least one piece of data representing the altitude z of the writing instrument relative to the writing surface, in an area of proximity to the writing surface; and authenticating the entered handwritten signature by taking account of at least the altitude z.