In one general aspect, a method can include receiving, from a magnetic sensor included in a housing of a computing device, an indication of a change of state of the magnetic sensor, obtaining, subsequent to receiving the indication of the change of state of the magnetic sensor, first data from a first accelerometer included in a lid portion of the computing device, obtaining, subsequent to receiving the indication of the change of state of the magnetic sensor, second data from a second accelerometer included in a base portion of the computing device. The base portion and the lid portion can be connected by a hinge about which the lid portion is configured to rotate relative to the base portion between an open state and a closed state. The method can include determining whether the computing device is being closed based on analyzing the first data and the second data.