I think you have a great idea. My father passed away, but he had alzheimers and he had a terrible accident when he was alone. He tripped and fell in the bathtub, broke his nose, and was terribly bruised. My mother got home to find him in the tub and he couldn't get out. That is the last time he was ever left alone. It is a horrible and very sad illness.
Any idea that would give family members a more secure feeling would be a great relief even though it is very sad to watch.
The Best of Luck to you and your idea. You can benefit a lot of people and they will appreciate it more than you will ever know. I know this first hand and from a long time of experience.
It is great to know people who care. Thank you !!!!
You are not alone, Good luck everyone!!!!!