If they use a walker, look at WalkWise (a Smart Walker Attachment). It can alert families via the mobile app if the walker doesn't move for a while, tips over, or doesn't move in the morning. While we want people to wear LifeLife or other emergency response devices, studies show they are only pressed in 20% of falls. WalkWise provides a second line of defense, passively. Plus, you can look at long-term trends or see short-term declines in activity that could be illness, infection, etc.
Disclosure, I am the Founder/CEO of WalkWise ([email protected])