Notifying disabled wife in case I can't?

Where I live, the County Sheriff's Office has the R.U.O.K service available. When you sign up, you receive a recorded message once or twice a day at a time of your choosing. You decide the time of day/evening and number of calls you wish to receive. If you don't answer because you aren't going to be home for any reason and haven't alerted the Sheriff's Office that you won't be answering the call, the Dispatch center is alerted of the non answered call and either a trusted friend, relative, neighbor or a Deputy is sent to the residence to check the well being of the person that signed up. This has proven to be an invaluable service in our area and has saved many lives over the years.