World's ProveKit Can Verify Citizens, Hotel Guests and AI Agents Without Taking Their ID

This story was originally published on HackerNoon at: https://hackernoon.com/worlds-provekit-can-verify-citizens-hotel-guests-and-ai-agents-without-taking-their-id.
Eight creative ProveKit use cases: citizen-only petitions, verified reviews, kids-only spaces, AI agent limits and account recovery with no stored ID.
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ProveKit, the zero-knowledge toolkit World open-sourced on 2 September, lets a phone read a passport chip, a passkey, a signed email or an anonymous credential and send out a proof of one fact about it while the document stays on the device. It proves in 2 to 3 seconds on an iPhone SE 3 and under 30 seconds on a 2GB Moto E15, works offline and is free under an MIT licence. This piece sets out eight things developers can build with it now: petitions only citizens can sign once, nationality pricing at a monument gate, children's spaces adults cannot enter, reviews only real guests can write, workplace reviews that cannot be traced, account recovery that never stores a passport, AI agents with a spending limit signed by a human and aid distribution with no signal.