What is the definition of "geo-fencing"?

The definition of "geo-fencing" refers to the creation of virtual boundaries around a specific geographic area that can trigger actions such as notifications, tracking, or alerts when a device enters or exits that area. This technology utilizes GPS or RFID to define these boundaries and often plays a crucial role in location-based services, marketing, and safety applications. For example, a business may use geo-fencing to send promotions to customers' smartphones when they are in proximity to the store, or alert users when they enter a designated zone.

The other options do not encompass the full meaning of geo-fencing. Analyzing geographic data boundaries might be part of broader geospatial analysis but does not capture the dynamic aspect of monitoring or interaction associated with geo-fencing. Mapping geographical features is a key element of geography but does not imply the real-time action or interaction typical of geo-fencing. Collecting geographical sound data relates to a different field involving acoustics and environmental monitoring rather than the concept of virtual monitoring based on geographic boundaries.