I was at a festival that did this earlier this year. A bunch of us were joking about selectively hacking/jamming the vendor wifi so that only specific vendor’s

I was at a festival that did this earlier this year. A bunch of us were joking about selectively hacking/jamming the vendor wifi so that only specific vendor’s rfid terminals could verify wristbands. “That’s a nice sushi stall you have there. It’d be a pity if you couldn’t make any sales…<nudge nudge wink wink>” A friend went so far as to experiment, he had a drone with a 2.4gHz video transmitter that could be turned up to 500mW, and it successfully shut down all the pos transactions in sight for 30 seconds or so… there is (at least in my experience) a reasonable crossover between festival crowd and hacker/cyber security crowd.