Identifiering av en användare

摘要

The invention relates to user identification. A media file (100) is presented to a user, the user gives as a response to said media file an identification input (101), which comprises at least one input element, and the user is identified on the basis of the combination (103) of said identification input and said media file by exam­ining temporal and/or spatial location of the input elements of said identification input in relation to the content of said media file.