Abstract: A method including: providing, on an output user interface of an electronic device, data including an audio sequence and/or an image, the provided data including a first and a second datum, the provided first datum being obtained by altering a third datum associated with a user account, the provided second datum being an unaltered datum or portion of a datum associated with the user account; designating one of the provided data via an input user interface; authenticating access to the user account from the electronic device based on a proximity between the designated datum and the provided first and/or second datum. A related electronic device, computer program product and corresponding medium.