"Some of the more popular services are... get an email notice when the kids get home from school. Many security systems have a mode that tells you when somebody comes in the door and you might like to have a notice that the kids got home from school on time. There are safety services that allow you to, for example, have a notification sent to you and or a neighbor and or a repair person when there's a leak in the basement." With a wireless phone... you can even open an electronically controlled door to let the repair person in. System prices start at about three hundred dollars. You can look for our full archive of reports at ThirdAge.com. Bootcamp, I'm Fred Fishkin for CBS News.