If you have Amazon Alexa, Google Home, or Microsoft Cortana in your house, here is a personal alert service that could be very helpful someday: "Ask My Buddy".
Lets say you have "Ask My Buddy" set up, have Alexa, and you fall in your house and need assistance. You simply call out "Alexa, Ask My Buddy for help". It will send a text message or phone call to people that you've set up to be alerted.
Here are a couple of links with more information:
This service would be especially helpful for the elderly or those w live alone, or perhaps need assistance when they are temporarily alone. We just did a demo in our house and it worked great.