Beacon Distance Accuracy

Thanks for reading this.
I have been developing ibeacon app using estimote beacons. It shows the distance to beacons in iOS.
I can get the distances but I am not sure this is correct or not because the distance offset is about 2 ~ 3 meters.

So can you please let me know how to get the beacon distance and offset?

Looking forward to hearing from you.
Kind Regards.

2 ~ 3 meters sounds about correct for Bluetooth-based distance estimations.

Hi. Thanks for your response.
Are there any way to reduce the accuracy to 1 meter or less?