Consider this scenario: Randall is an elderly man living alone. He's doing pretty well -- until one day he has a mild stroke. In the weeks that follow, he's not as active as usual, getting up later and not leaving the house. Motion detectors, a mattress sensor and a smart door lock in his home detect the change in his activity patterns. Randall's daughter gets a message prompted by her father's activity data in the cloud, checks in on him and takes him to the doctor. Once he's received treatment, Randall returns home, with marching orders to equip his home with additional sensors and cameras that can track his health and upload information to the cloud for his doctor to monitor.