Posted by: ACI Editor | June 11, 2008

Defining GPS Points of Interest for location relevant content

GPS Tour Technology

GPS Points of Interest or “POI”s are also commonly known as GPS waypoints. Way points are gathered at specific points on the earth (for example, a building, an intersection, a monument), locations on land or on water that are considered to be “of interest” to people.  

The most basic information associated with any POI is latitude and longitude coordinates.

POI information is used to GPS trigger location relevant content - audio, video and static images delivered through Public Address systems, wirelessly to audio receivers, and on LCD and flat panel TVs.

Additionally, POIs can include additional information. For example, our POIs include directional information, meaning, with each latitude and longitude coordinate we capture, we also collect the directional information (the direction we are travelling when the latitude and longitude information is captured). Directional information is used in a variety of tourism and transportation applications. For example, directional information is used to deliver north and southbound content using the same latitude and longitude coordinate. This seems logical for transit applications - buses, trolleys, trains and trams. But directional information is also relevant for boat tour applications. For example, the first GPS trigger for Kingston 1000 Islands Cruises Discovery Cruise is in close proximity to the dock (this is where the Discovery Cruise experience begins). To ensure that this GPS trigger never plays the associated content when the boat is returning from its 90 minute tour, the POI or GPS trigger includes directional information - the first audio segment is never played when the boat is completing its tour.

POIs also include information such as Tolerance. Tolerance is defined as the amount of area around a POI that will “trigger” a command. (For example, a command can be Play Audio files 1, 2, 3, 4, 5 and 6 simultaneously. 1 to Public Address System - 2, 3, 4, 5, and 6 to wireless receivers.)

Tolerance is used to create small GPS trigger points (for example, 5 metres) or much larger “trigger” areas, for example, large parking lots.   

Other information that can be included with POIs is approximate location, comments and notes, and play list related information.

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