System uses algorithm that coordinates multiple access points (routers) at once, syncing their phases so that multiple transmitters can share the same part of the spectrum without interference. The team was able to increase Wi-Fi speeds by a factor of 10 when it had tested with additional routers. However, the team admitted that the system had not been tested in a stadium or any large venue, but in a lab using four laptops that roamed on Roomba robots designed to move around like people do in large gatherings.
Source: https://thehackernews.com/2016/08/fastest-wifi-network.html