The present embodiments provide a method for unlocking a function of a device using a timepiece including a display device including display elements and a control device driving the display elements in a predefined animation sequence. The method including that the timepiece is placed in front of a detection device, the control device is actuated to drive the display elements in the predefined animation sequence, the predefined animation sequence is detected by the detection device, the detected animation sequence is compared to a reference animation sequence, and if the detected animation sequence is identical to the reference animation sequence, then the function is unlocked.