React Native

npx expo install @worldcoin/idkit expo-crypto

import { useIDKitRequest, proofOfHuman } from "@worldcoin/idkit/expo";

import { Alert, Button, Linking, Text, View } from "react-native";
import {
  useIDKitRequest,
  proofOfHuman,
  type RpContext,
} from "@worldcoin/idkit/expo";

export function VerificationScreen({ rpContext }: { rpContext: RpContext }) {
  const flow = useIDKitRequest({
    app_id: "app_your_app_id",
    action: "verify-human",
    rp_context: rpContext,
    preset: proofOfHuman(),
    allow_legacy_proofs: false,
    return_to: "myapp://verified",
  });

  return (
    <View>
      <Button
        title="Start verification"
        onPress={flow.open}
        disabled={flow.isOpen}
      />

      {flow.connectorURI && !flow.result && !flow.isError && (
        <Button
          title="Open World App"
          onPress={() => {
            Linking.openURL(flow.connectorURI!).catch(() => {
              Alert.alert("Could not open World App", "Please try again.");
            });
          }}
        />
      )}

      {flow.isAwaitingUserConfirmation && <Text>Waiting for approval…</Text>}
      {flow.isError && <Text>Verification failed: {flow.errorCode}</Text>}
      {flow.result && (
        <Text>Proof received — ready for backend verification.</Text>
      )}
    </View>
  );
}