They started using beacon instead of RFID because RFID cards they were using were becoming more expensive than iBeacons and becoming scarce. They wanted tags they could second source, have a long battery life, long range and easy setup.
They have found the Indigo/piBeacon combination reliable, fast and have told us it works with all the Axaet, AnkhMaway and Minew beacons purchased from us.
We have recently come across Beacon Server, a useful application for Raspberry Pi 3 and OS X, by Yannick Weiss in Switzerland, that detects beacons and calls webhooks, for example IFTTT when a beacon enters or leaves the area. It’s controlled via a web interface: