Geofencing is a marketing strategy used by several businesses. Think of it like this, the businesses set up a virtual boundary (don’t worry the virtual boundary is completely invisible) around an area where they believe their target customers are. Once a target customer enters the boundary, they are able to target their ads and promotions towards you. Typically, businesses set up geofences around a specific business or event. For example, American Eagle is having a sale and they set up a text that sends when a potential customer enters the geofenced area.