An elevator system vibration stabilizer device retains an information carrier extending through an elevator shaft at at least one point of the information carrier and includes a retaining element and a clamping element according to an assembly method. The clamping element is connected to the information carrier at the at least one point by a clamping force transmission device whereby the information carrier is applied with a clamping force against at least one contact region on the retaining element. The retaining element is stationary in the elevator shaft. A magnet element is an alternative to the clamping force transmission device. The vibration stabilizer device is included in an elevator system shaft information system to provide a method for preventing vibrations of the information carrier.