Our world is now a digital ecosystem. From single sign-on to opting-in to a site’s cookies policy, consumers are taking control of their digital path and footprint more and more. So how can marketers use this ecosystem to reach more of the right people on the device they are holding in their hand right now? How can marketers influence their audience?

One simple way is geotargeting. Also called geo fencing, this manner of audience targeting is based on the location of a device.

Businesses and organizations might use geotargeting to serve ads only to those in close proximity. A restaurant wants lunch customers that are sitting in the surrounding offices. An auto dealer wants to target those on his competitor’s lot. A trail system wants to target those that live in driving distance. The tighter the geography, the fewer devices will fall within it—thereby right sizing the budget and the audience.

Imagine that your audience is concentrated in a single place for an entire day or weekend. An example that instantly comes to mind is a political gathering, like the republican or democratic convention. Drop a pin in the meeting place and serve ads within a mile radius (or less). You now have access to an audience that might have flown in just for the event and can follow them home.