It's like find my friend on ios, expect it will be cross platform and web app.
http://arstechnica.com/gadgets/2016/12/googles-new-trusted-contacts-app-lets-you-keep-tabs-on-family/?comments=1
I think this is great, and I plan on using it just for the shear convince of it.
nobody in my family is ocd stalker crazy, so their shouldn't be any problems.