ESTIMOTE BEACONS
An beacon is a small, wireless device. When placed in a physical space, it broadcasts tiny radio signals to smart devices.
Think about it as a very small lighthouse. Smartphones that are in range are able to ‘hear’ these signals and estimate their location very precisely.
Among other brands from Gimbal to Roximity and self designed beacons, codeparc is implementing Estimote beacons.
(Source: https://player.vimeo.com/)