April 2013
Intermediate to advanced
264 pages
7h 44m
English
Location-based services are handy in all sorts of ways, from helping users with mobile devices find their way around to providing tailored information about the region they live in. The Geolocation API accesses a device’s location services, which use GPS, wireless, or cell tower data to provide information about the device’s location that will be used by your location-based apps.
Location data obviously involves privacy concerns, so in most (if not all) browsers, users must give explicit permission to access this data, usually in the form of an on-screen prompt that allows them to opt in or out of providing their location, as shown in Figure 6-1.
The data is held in ...
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