I've got a couple of induction stove tops. They mostly use 2kw max, but pulse on and off to emulate lower power levels. So if you can't supply 2kw, you'll not have a good time.
I have run one on a 2kW inverter and an AGM battery.
https://www.ikea.com/au/en/p/tillreda-portable-induction-hob-1-zone-white-40493509/
They are dirt cheap, so not a huge risk if it doesn't work.
Just repeating an arguement I have seen:
There are always troublemakers, especially so at gay bars. An automated ID system allows for instantly detecting and ejecting them. Without the automated system, you have to get all of the bouncers across all of the bars to somehow share ID of the bad actors, which is hard, so people can slip through.
Whether that justifys risking leaking the identities of all of the legit patrons, I dunno, but clearly some of the bars thought so...