What does beacon transmit as its data ?

[Blue_Jack]

On developer site I saw "The RSSI value of the beacon measured at 1 meter distance, which can be used for estimating the distance from the beacon." I don't get it can any one elaborate on it.

[Michael Dietz]

See this: developer.mbed.org/.../

Beacons are continuously broadcasting data in the form of specifically formatted advertising packets. The link i posted will explain what is contained within these packets and how this info. is used.

The packets a beacon sends will contain something like: A TX power level indicating the signal strength one meter from the device.

Lets say we walk into a grocery store. Our phone detects that their is a beacon advertising and it reads the packet. We read the packet and find out what the RSSI should be if we were one meter away. Now we look at the actual RSSI of the beacon signal and compare this to the constant value for 1 meter we just read. We can then calculate how many meters away we are from the beacon.