I walked past them and they called out something about Central Bank Digital Currency, so that's a real thing about which there might be legitimate concerns. None of them had any placards or messages about chipping dogs and cats, which is of course is another real thing – and, I note, one that crops up in covid conspiracies. But they did, I'm afraid, have about them an aura of eccentricity verging on aberration (even by the standards of this part of Bristol!). I've seen them there before, so maybe I'll get a chance to question them about pet-chipping in relation to payments (or maybe forumites can compile a list of questions for them – though I'm sure you'll have your own local group to put them to).