Geofencing is a technology that defines boundaries around a particular area.

In the real world, fences are physical barriers that mark the extent of someone’s private property, or that keep people and animals out. The fences referred to here are virtual boundaries established by Global Positioning Systems (GPS), electronic sensors, and the Internet.

Today the main use of geofencing is for companies to target customers with marketing promotions based on where they are located at the moment.

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