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GPS on the PlayBook - How it actually works
There's always been questions about the functionality of the playbook's gps.
Hope this answers a few questions.
How To - Enable GPS capability in BlackBerry WebWo... - BlackBerry Support Community Forums
How To - Enable GPS capability in BlackBerry WebWorks for Tablet OS development
BlackBerry WebWorks SDK
Applications created using the BlackBerry® WebWorks™ SDK for Tablet OS can leverage the GPS capability of the BlackBerry® PlayBook™ tablet in order to retrieve current GPS coordinates.
The BlackBerry® Tablet OS currently supports the following two types of GPS modes:
Using an internal GPS chip, device computes a fix by communicating with satellites only
Requires a clear view of the sky
No data connectivity required
Relatively higher Average Time To First Fix (TTFF)
Computes location based on WLAN access points
Requires the device to be provisioned with this service
Requires WLAN connection point be registered with RIM's Geolocation service
Less accurate than standalone GPS but must faster to acquire a GPS position
Note: The Tablet OS will decide to use standalone GPS coordinates if they are available, and then WLAN as a second choice.