I am currently testing out an app called Life360 which allows me to create a private circle and invite people into it. I can then send and receive alerts to and from these people so I know where they are at all times. It is marketed mostly as a way for families to keep track of each other. There is another one I've found called Family Orbit which provides substantially more tracking (eg. parents can see what web sites their kids go to on their device, etc.). Anyway, I am looking for feedback from anyone who may use these or other family locator apps. In the initial stages of an emergency I can see the usefulness of something like this so I can see where my family is. Both versions keep a location history so even if the phone is not currently on I can see where a family member most recently was.