A device for simulating finger movement on a computer touchpad prevents the computer attached to the touchpad from falling asleep or locking. The device includes a small motor that moves a weight inside the device and thereby changes the location of the center of gravity of the device, causing the device to tilt in different directions when the device is placed on the touchpad. The lower support of the device is conductive, e.g., metalized, so that the changes in the location of the contact patch between the device and the touchpad simulate finger movements on the touchpad. The small motor may be an electric motor, such as a wall/desk clock motor powered by an AA battery, or a mechanical wind-up movement. In examples, the simulated finger movement is linear or circular.