Bluetooth

Bluetooth is a low range wireless service designed for accessories.  Bluetooth can typically communicate 10 meters, but it is possible to extend coverage as far as 100 meters.  

Bluetooth access points operate similarly to Wi-Fi access points, providing a networking connection that can extend to the Internet.  Most personal devices use Wi-Fi for local wireless Internet access, and in some facilities the user may not wish to pay for Internet access.  Bluetooth access points offer WAI user devices another channel to the WAIFIND server that does not depend on Wi-Fi.

Bluetooth Low Energy (BLE) beacons broadcast information periodically. A user device equipped with bluetooth can receive any number of BLE beacon broadcasts.  Each reception includes a signal strength measurement from which a wireless position may be estimated.  

Wi-Fi

Wi-Fi access points provide an interactive data link to the WAI user device. The user device can receive signals from many proximate Wi-Fi access points measure signal strength for wireless positioning. The user device may only attach to one Wi-Fi access point for networking services. 

The WAI user device does not use Internet access if the Wi-Fi access point is connected directly to a facility WAIFIND server.

The WAI user device will use Wi-Fi Internet access if that is the only pathway to reach the facility WAIFIND server. 

Cellular

Cellular connectivity provides a WAI user device direct access to the Internet.  The WAI user device will seek the relevant facility WAIFIND server first on bluetooth and Wi-Fi.  A cellular connection is used with no local wireless connection to a WAIFIND server is available.  The WAI user device will connect to the central WAIFIND server, from which it will be routed either to the "remote/virtual" facility server, or it will be routed directly to the local WAIFIND server.