At a large convention, would personal Wifi hotspots even work reasonably?
There are only 11 Wifi channels available in the US, and since the channels are considerably wider than the center frequency separation each overlaps with several adjacent channels--meaning that in a given area at most 3 wifi hotspots can operate before you start to get overlap.
Unless the power is kept very low, so that only devices very near you can see your hotspot, I'd expect performance to be terrible if more than a handful of people fire up their hotspots.
There are only 11 Wifi channels available in the US, and since the channels are considerably wider than the center frequency separation each overlaps with several adjacent channels--meaning that in a given area at most 3 wifi hotspots can operate before you start to get overlap.
Unless the power is kept very low, so that only devices very near you can see your hotspot, I'd expect performance to be terrible if more than a handful of people fire up their hotspots.
Have I overlooked something?