1. A method comprising: storing contextual information that describes a state of a head-mounted device and an interaction with a first application on the head-mounted device; based on the interaction with the first application, providing a notification to the head-mounted device of an opportunity to extend the interaction with the first application using a second device; and in response to a received selection of the opportunity, providing to the second device the stored contextual information such that the second device is capable to extend the interaction with the first application on the second device.