Computing devices and methods for resetting an inactivity timer of each of a first and second computing device are described. In one embodiment, the method comprises establishing a communication channel between the first computing device and the second computing device, receiving activity input responsive to a user interaction at the first computing device, resetting the inactivity timer of the first computing device, and transmitting a notification via the communication channel to the second computing device that the activity input was received at the first computing device, the inactivity timer of the second computing device being reset in response to receipt of the notification.