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I'm trying to create an app which will allow me to measure the distance between two iPhones using the data from GPS. I have already achieved to find the location but I don't know how to make them exchange this data so as to evaluate the distance between them. Could you please help me to solve the problem? Thanks in advance.
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Touch and hold anywhere on the map that isn't a place's name or icon. A red pin appears. Select Measure distance .
The 'WifiNanScan app lets you measure distance with a precision of about one metre with phones up to 15 metres apart. Google has launched a new WifiNanScan app for developers on the Google Play store. This app measures distance between two smartphones using the Wi-Fi Aware protocol.
iPhone automatically detects the dimensions of rectangular objects, or you can manually set the start and end points of a measurement. For best results, use Measure on well-defined objects located 0.5 to 3 meters (2 to 10 feet) from iPhone.
With the received signal strength, you measure the distance of Bluetooth A from B by using the Bluetooth signal strength that A receives from B. The a is a factor to offset the maximum received signal.
I believe that the best way to do it is setting up a server (e.g. using Google App Engine) and make the phones connect to it to exchange their position.
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You can use " getDistanceFrom " function in " CLLocation "
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