By utilizing Bluetooth networking, which is supported
by the vast majority of the mobile phones that are in
use today, certain advantages were evident: participants are
only required to carry with them a personal device, the
collected trace data can be delivered in real-time, while also
the infrastructure cost is cheap to purchase and maintain.
Moreover, Bluetooth allows for greater localisation accuracy
compared to WiFi, due to its more limited range. It is also
easier and safer to setup and operate, due to the inherent
features in Bluetooth’s design.