using iPhone to track elderly parent
OK. so i googled this and thought to throw it out to the mac cognescenti. advance apologies if this is not the right forum for this but apple seems to come up with great useful new tools very frequently. anyway, here goes:
is there good hardware or software to track an elderly parent that may need to be tracked for their own safety? i mean, assuming they give permission and/or assuming they are beyond the point where they can give permission is there such a thing as a little bracelet that will let me do this using my iphone and some kind of software?
find my iphone seems like it does something similar, however this is assuming the battery on the phone is not dead and assuming they take the phone with them which are both big assumptions - is that correct?
ALSO, i just saw there was a setting for friends and family on icloud.com but does anyone know how this works? can i just turn it on on his phone and have access to where he is when his phone is with him and when his battery is on? i mean, how is this different than just logging in to his/her icloud account using the safari icloud.com url - assuming they gave you their login information?
THANKS
iPhone 6, iOS 8