What features would you like to see in an elderly care home sensing system?

We are doing a year long student team project on developing a home monitoring system for the elderly, and looking for input on what actual caregivers (in our case, children of elderly parents) would like to see in such a system.

We know a few things: people do not like to hang sensors/monitors from their necks (identifies them as incapable), may have trouble charging any wearables on their hands (forget, lose charger, ...), do not like intrusive monitoring (so, has to be passive), and would like to feel empowered to help themselves.

Any ideas would be greatly appreciated.

Thank you

Not directly relevant:

http://www.smh.com.au/national/jyls-journey-to-aged-care-i-f...

I just read an article on aged care this morning.

My parents, particularly my mom, had to take care of one of my grandparents for several years. One thing you should consider is that many people who must care for an elderly parent are themselves a little older, probably at least middle-aged. These people may not be tech savvy, so I think a system that is easy to use, understand, and troubleshoot would be important.