3. 3
A beacon is usually a small, battery-powered transmitter, such as
the Estimote Beacon, that broadcasts Bluetooth signal with Bluetooth Low
Energy.
4. 4
It’s like a radio station that plays only one song, over and over, but instead
of music the beacon sends out a unique ID number that can be read by an
app on your phone. That app, in turn, can look up the location of that
particular beacon and deliver information to you based on where you are