Elderly Challenge - Observation 2

Elderly cannot afford to fall down as it can result in loss of mobility or even life. When elderly lives or is left alone at home, he or she could not get help easily if he or she fell down and need to be sent to hospital for medical treatment. The elderly would be just left there without anyone knowing it. I am wondering if we could have a wristband for the elderly that could allow he or she to press on it on a message will be sent to the police, the neighbors or the guardian to notify them to get there and help him or her. In case the elderly fainted and could not press the wristband, the wristband will make a sound hourly (other than the time the elderly is sleeping), pressing on the wristband will then stop the sound. This is to ensure that when elderly is unconscious, others will still be notified to help.