Forwarding activity-related information from source electronic device to companion electronic device

The invention relates to forwarding activity-related information from a source electronic device to a companion electronic device. The described embodiments transfer activities from a source electronic device to a companion electronic device. A source electronic device receives activity information describing an activity performed in a first application at the source electronic device and broadcasts an activity announcement including an activity identifier for the activity. Upon receiving the campaign announcement, the companion electronic device determines whether a second application associated with the first application is available at the companion electronic device. If the second application is available, the companion electronic device obtains the extended activity data from the source electronic device and uses the extended activity data to configure the second application and begin performing the activity by the second application at the companion electronic device. The source electronic device may al