Halloween night can involve lots of running "amok, amok, amok" for some people—and a lot of repeat watches of "Hocus Pocus" for others. If you're part of the former, sharing your location with friends ...

There are plenty of reasons why you might want to let a small, select group of people know where your smartphone is: To let them know you're safe, for example, or so they know how long it'll be before ...