Beacons are small, wireless transmitters that use low-energy Bluetooth technology to send signals to other smart devices nearby. They are one of the latest developments in location technology and proximity marketing. Put simply, they connect and transmit information to smart devices making location-based searching and interaction easier and more accurate.
Beacon technology works only with a smartphone and mobile app, so users can simply opt for turning off Bluetooth. There are also people who use their smartphones without keeping Bluetooth on all the time.