Sensor API Glossary
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ambient light sensor
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A sensor that detects the current lighting level.
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geodetic reference system
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The combination of an ellipsoid, which specifies the size and shape of the earth, and a base point from which the latitude and longitude of all other points are referenced.
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light-aware user interface (UI)
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A program that uses ambient light sensor data to optimize its user interface and content for particular lighting conditions.
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logical ID
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A globally unique identifier (GUID) that identifies a particular logical sensor. A logical ID is required each time you connect to a logical sensor.
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logical sensor
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A sensor that provides data without using a hardware device. For example, a logical sensor could provide data about the user's current location by using a service that looks up an IP address in a table.
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lux value
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The amount of light, in lumens per square meter, that illuminates a surface. Ambient light sensors provide data in lux values.
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reference ellipsoid
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An ellipsoid associated with a geodetic reference system, whose surface approximates the size and shape of the earth.
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sensor
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Hardware or software that can detect external events or environmental conditions. For example, a global positioning system (GPS) receiver is a sensor that can determine a user's current physical location.
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sensor category
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A broad class of sensor devices. For example, a sensor in a video game controller that detects the position and movement of a player's hand belongs to the Orientation category of sensors.
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sensor collection
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Multiple sensors that can be worked with as a group. For example, a sensor collection could include all available motion sensors, and a method could be called that retrieves this collection.
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sensor data report
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A report that contains data field values that are generated by a sensor.
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sensor device
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A hardware device that can detect external events or environmental conditions. A single hardware device can contain multiple sensors.
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sensor manager
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A programming object that maintains a list of available sensors and provides access to them.
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sensor type
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A specific kind of sensor, such as a three-dimensional accelerometer.