A worldcoin gizmo which is basically a digital camera and I think has some face scanner stuff like an iphone. Once they've scanned and checked you are someone who hasn't been done already they give you basically a crypto wallet with some 'worldcoin' shitcoin in. And there's an app.

You only get a scan at the start, after that it's basically a usual crypto wallet + private key. They don't ask for your name or id or anything at the start. Although they are now offering me like $25 if I'll scan my passport and do kyc stuff. I think they are trying to make it into a payment/investment network.