Katherine Dunn is the author of “Little Blue Dot: How GPS Shaped the Modern World” (Bloomsbury), from which this article is adapted. Shortly after the burst of the dot-com bubble in 2000, a new type ...

Find My lets you locate, lock, or erase your phone before someone else gets access Worried about losing your phone? This article explains how to set up Find My on your iPhone so that you can monitor ...

Apple offers a service called Mobile Me, which among other things, lets iPhone users locate their phone on a map and even remotely lock their phone with a password in case it’s been lost or stolen.