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A Beacon is a small device- working on Bluetooth Low Energy (BLE) technology- that can interact and deliver contextual information to mobile devices. This helps brands better connect with customers by identifying the geo-location of mobile devices and deliver brand related information like promotional offers, coupons, discount information...
In geometry, trilateration is the process of determining absolute or relative locations of points by measurement of distances, using the geometry of circles, spheres or triangles. In addition to its interest as a geometric problem, trilateration does have practical applications in surveying and navigation, including global positioning...