So I travel a lot for work and some of my family members have my user name/password so they can log into Find My iPhone and see where I'm at in the world. No big deal. My question is this... It seems to be completely random, but sometimes I get an email notification from apple that my info has been used to log into my Find My iPhone account from device X, or something to that effect. And then there are other times I know my folks or other family members are using it but I don't get any email. Why is this? It seems that sometimes they are just staying logged in and other times the app is logging them out and they have to log back in. What determines all that? I looked in my Apple ID account and couldn't really find anything on how to manage this as a setting. Thanks folks for any info.