Answer :
Beacon Technology is being used by Coca-Cola to give their customers a free coke each time they walk into a movie theater.
What is Beacon Technology?
Beacon Technology is a tiny wireless radio transmitter that sends signals to other smart devices within the vicinity using low-energy Bluetooth technology.
They mostly transmit information about one's location.
See the link below for more about Beacon Technology:
https://brainly.com/question/6875050