Many people “drop a pin” when they want to send their location to someone else, but what if you don’t have a good connection or need to speak where you are? Now, an app called what3words can help.

In the summer of 2008, Apple shipped the iPhone 3G, which featured a built-in GPS (Global Positioning System) receiver. It took a year for Apple to add support for using the iPhone as a turn-by-turn ...