# Handling the QR code

The mobile app or other app that recieves the Deeplink checks the valididty of the challenge, it also carefully displays to the user anti-phishing information to allow the user to verify then trust that the Challeng is coming from a legitemate service.

async function verifyLoginConsent() {

  const request = /* previously created request */;
  const isValid = await verusIdClient.verifyLoginConsentRequest(request);
  console.log(isValid ? "Valid request" : "Invalid request");
  if (isValid) {
    const res = await VerusId.createLoginConsentResponse(
    "<your identities I address>",
    new primitives.LoginConsentDecision({
      decision_id: request.challenge.challenge_id,
      request: request,
      created_at: Number((Date.now() / 1000).toFixed(0)),
    }),
    "<your i addresses primaryaddress WIF>"
    );

    const redirects = res.decision.request.challenge.redirect_uris
      ? res.decision.request.challenge.redirect_uris
      : [];
  
    let redirectsObj = {};

    redirects.forEach(a => {redirectsObj[a.vdxfkey] = a;});

    if (redirectsObj[primitives.LOGIN_CONSENT_REDIRECT_VDXF_KEY.vdxfid]) {
      redirectinfo = redirectsObj[primitives.LOGIN_CONSENT_REDIRECT_VDXF_KEY.vdxfid];
      // Post response to webhook URL
      await axios.post(
        redirectinfo.uri,
        res)
    } else {
      redirectinfo = redirectsObj[primitives.LOGIN_CONSENT_WEBHOOK_VDXF_KEY.vdxfid];
      const url = new URL(redirectinfo.uri)
      url.searchParams.set(
        primitives.LOGIN_CONSENT_RESPONSE_VDXF_KEY.vdxfid,
        base64url(res.toBuffer())
      );

      const urlstring = url.toString()
      // Open URL in webviewer
      openUrl(urlstring.toString())
    }
  }
} 

To turn this login challenge to a Deeplink that can be put into a QR code or a link that can be clicked.

// Continuing from before
const request = await verusIdClient.createLoginConsentRequest(signingId, challenge, primaryAddrWif);
const deepLinkURL  = request.toWalletDeeplinkUri()

verusid login

# Handling the QR code

# How to sign the QR code to login