[john70t]

If you don't mind the intrusion, there are a lot of pay services available:
Med Alert | Mobile Alert Systems Mobile panic button on a necklace.
CAREŽ and eCARE Check Up Calls | Service Under $15 / Month - CARE Telephone Reassurance Program.
Simply Checking In | Automated Daily Care Calls for Elderly Home Safety | Home
Telephone Reassurance Call Service & Programs - providing seniors daily telephone check-in, medical alerts, caregiver support, RUOK programs

Beware the scams. Seniors get a warning on medical alert scam