[trout]

For the curious, this is a small scale map of what they'll be viewing: http://www.cisco.com/en/US/prod/collateral/wireless/ps5755/p...

I would be really curious to what the wireless spectrum looks like at an event like that. Most football fans won't bring more than a phone, but with 80,000 people there will be some outliers. Maybe someone decides to bring a walkie talkie set that works over the 2.4 Ghz band, lots of people with bluetooth headsets, or other odd bluetooth devices. Wireless cameras can ruin Wifi on the same bands.

Monitoring 'rogue' devices is actually a requirement of all parts of a business that handle credit card transactions (PCI). It's to prevent card card data from leaking out of a planted wireless device (small device plugged into bag of a register/pc, etc). That's one of the main drivers for this technology existing beyond anything else.