Re: The basic idea may be sound
It's actually a pretty good idea. The bad part is the involvement of Comcast. The even worse part is the involvement of insurance companies.
It also strikes me that a lot of, if not most of, the monitoring and analysis of sensor data could be done entirely locally rather than sending it all off to a third party. If the local monitoring system detects a potential problem, then it could do something like notify that person's physician directly.