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A service provider can come up with this idea. The person is wearing a watch/device, that monitors his heart beats. The device is also a GPRS, which correctly specifies his location at any point of time. If the person subscribes to this service, his life is guaranteed to be in safe hands. The service provider has got branches all over the world. The service provider could club with the Medical Institutions / other service providers for any help a client will require at any point of time. The help he requires could be when he's had a heart attack or is in a desperate situation @ some wee hours. The device beeps an SOS to the monitoring station, and be it any place, anywhere in the world, and you don't have your loved ones and friends and relatives around. The service provider takes complete care of the client. I think it's a good idea for people who walk alone. And we help them continue in their journey to walk alone.