PointTo.Me is an automatic location sharing tool that lets your friends and family see when you're at places you elect.

PointTo.Me allows you to see the locations of your loved ones, but only at places where they want to be seen.  See when your spouse is at work, or when your kids got home from school without intruding on their privacy, and without having to check in.

PointTo.Me senses when your phone connects to WiFi.  When it does, it will ask you if you would like to be seen at this location.  If you agree then any time your phone connects to that WiFi you will be shown as in that location.  If you decline, then nothing will happen when you connect.

When my kids get home, their phones automatically connect to the WiFi so it updates me and lets me know whenever they come and go.  Since I've granted permission to be seen at work, my spouse gets notified when I get there and when I have left.  Because I don't want my wife to know when I go to McDonald's, I declined to be seen when I'm there.

It's an app that allows you to make of it what you want.  Let your friends know when you're at work, home, or any restaurant or bar, or just show a few people when you're in one or two different locations.