Distance calculation for the detected beacons.

[awazgyawali]

I have added the filed to one of my project, everything works well but there is no mechanism to get the distance. I tried this article formula to calculate the distance but I am getting very vague value as compared to the alt beacon library for android. I see alt beacon uses different calculations method for that.

However, the article seems quite outdated as some of the hyperlinks work no more. Can you shed some light on it @davidgyoung , maybe some tips that can be helpful for me to begin with.

[davidgyoung]

Did you try the built in distance calc?

ios-beacon-tools/ios-beacon-tools/RNLBeacon+Distance.h

Line 37 in ed4adf1

@property (readonly) CLLocationAccuracy distance;

Distance estimates are always going to be rough.

[awazgyawali]

It's giving very vague value, like 40 m for about 3 - 4 meters.

[davidgyoung]

It sounds like the beacon is not properly calibrated. You need to configure the measuredPower field in your beacon transmitter to the 0 meter expected RSSI value (for Eddystone) or the 1 meter expected RSSI value (for AltBeacon). Make sure your beacon is transmitting this configured value. If you do this, and then put the receiver 0 meters away for Eddystone or 1 meter for AltBeacon, you should get distance estimates of about 0.0 and 1.0, respectively.