Reader's Digest version: friend's mother fell and couldn't get up. Just like the commercials. Friend asked me to look into a technological way of her mom being able to press a button on some sort of transmitter device to send SMS messages.
If the technology exists in the United States, I can't find it after a week of searching. Oh, there's plenty of services that will install a device that will contact them, but, why pay a service?
As I was thinking about this problem, I was pulling into my driveway. I hit my garage door opener. That got me to thinking about a device that would send an infrared or bluetooth signal to a receiving device. Once that receiving device receives that signal it'll initiate emails and / or SMS messages to a list.
In searching I came across a gent who used an Arduino to open and close his garage door by sending an SMS from his cell. He could check to see if it was open or closed also by SMS.
That got me to thinking: why couldn't you use a garage door opener key fob to send a signal to an Arduino? The key fob would be small, easily put on a lanyard that could be worn all the time, and waterproof, too (in case of a shower fall.)
Unfortunately, I don't have the technical abilities to pull off anything like this. I hope this is the correct place to place a posting like this, and I beg your indulgence if I've put it in the wrong location.
Thank you to anyone who can let me know if this is feasible.