Geographic Location Architecture

The Windows Phone location architecture consists of three layers: a hardware layer, a native code layer, and a managed layer (see Figure 17.3).

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FIGURE 17.3 Location architecture layers.

The hardware layer comprises the location related hardware components in the phone device, which includes a GPS receiver, a Wi-Fi interface, and a cellular radio. Each serves as a provider of location information with varying degrees of accuracy and power consumption.

The second layer, a native code layer, communicates directly with the hardware devices to determine the location of the device. The choice of hardware component, ...

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