Geofencing has been around about as long as GPS systems. Later it was used to help track livestock and such. Nowadays, businesses can use geofencing to market their businesses to consumers who are in their near vicinity.
Geofencing technology uses radio frequencies, GPS, and Bluetooth beacons to communicate between your business and prospective customer’s smartphones.
For example, if you own a store in a shopping mall, you might show mobile users a coupon or discount going on in your store via geofencing. When the mobile phone user walks into the store, their phone triggers the geofencing mechanisms, and then your ad is displayed in their social media feed, as a notification, sent as a text message, or any other geofencing means.