🟢 Build a Demo of Face Recognition Authentication ✨

 js


  const initialiseFaceio = async () => {
    try {
      faceioRef.current = new faceIO('Faceio-Public-id');
      console.log("FaceIO initialized successfully");
    } catch (error) {
      console.log(error);
      handleError(error)
    }
  };
  useEffect(() => {
    initialiseFaceio();

  }, []);

// HANDLE REGISTER 
  const handleRegister = async () => {
    try {
      if (!faceioRef.current) {
        console.error("FaceIO instance is not initialized");
        return;
      }

       await faceioRef.current?.enroll({
        userConsent: false,
        locale: "auto",
        payload: { email: `${email}` },
      });
     // here you add you cookie storing logic ...

      toast.success("Successfully Registered user.")

    } catch (error) {
      handleError(error);
      faceioRef.current?.restartSession();
    }
  };

// HANDLE LOGIN 
  const handleLogin = async () => {
    try {
      const authenticate = await faceioRef.current?.authenticate();
      console.log("User authenticated successfully:", authenticate);
      setUserLogin(authenticate.payload.email);
            // here you add you cookie storing logic ...

    } catch (error) {
      console.log(error);

      handleError(error);
    }
  };

 // HANDLing ERRORs 
  function handleError(errCode: any) {
    const fioErrs = faceioRef.current?.fetchAllErrorCodes()!;
    switch (errCode) {
      case fioErrs.PERMISSION_REFUSED:
        toast.info("Access to the Camera stream was denied by the end user");
        break;
      case fioErrs.NO_FACES_DETECTED:
        toast.info(
          "No faces were detected during the enroll or authentication process"
        );
        break;
      case fioErrs.UNRECOGNIZED_FACE:
        toast.info("Unrecognized face on this application's Facial Index");
        break;
      case fioErrs.MANY_FACES:
        toast.info("Two or more faces were detected during the scan process");
        break;
      case fioErrs.FACE_DUPLICATION:
        toast.info(
          "User enrolled previously (facial features already recorded). Cannot enroll again!"
        );
        break;
      case fioErrs.MINORS_NOT_ALLOWED:
        toast.info("Minors are not allowed to enroll on this application!");
        break;
      case fioErrs.PAD_ATTACK:
        toast.info(
          "Presentation (Spoof) Attack (PAD) detected during the scan process"
        );
        break;
      case fioErrs.FACE_MISMATCH:
        toast.info(
          "Calculated Facial Vectors of the user being enrolled do not matches"
        );
        break;
      case fioErrs.WRONG_PIN_CODE:
        toast.info("Wrong PIN code supplied by the user being authenticated");
        break;
      case fioErrs.PROCESSING_ERR:
        toast.info("Server side error");
        break;
      case fioErrs.UNAUTHORIZED:
        toast.info(
          "Your application is not allowed to perform the requested operation (eg. Invalid ID, Blocked, Paused, etc.). Refer to the FACEIO Console for additional information"
        );
        break;
      case fioErrs.TERMS_NOT_ACCEPTED:
        toast.info(
          "Terms & Conditions set out by FACEIO/host application rejected by the end user"
        );
        break;
      case fioErrs.UI_NOT_READY:
        toast.info(
          "The FACEIO Widget could not be (or is being) injected onto the client DOM"
        );
        break;
      case fioErrs.SESSION_EXPIRED:
        toast.info(
          "Client session expired. The first promise was already fulfilled but the host application failed to act accordingly"
        );
        break;
      case fioErrs.TIMEOUT:
        toast.info(
          "Ongoing operation timed out (eg, Camera access permission, ToS accept delay, Face not yet detected, Server Reply, etc.)"
        );
        break;
      case fioErrs.TOO_MANY_REQUESTS:
        toast.info(
          "Widget instantiation requests exceeded for freemium applications. Does not apply for upgraded applications"
        );
        break;
      case fioErrs.EMPTY_ORIGIN:
        toast.info("Origin or Referer HTTP request header is empty or missing");
        break;
      case fioErrs.FORBIDDDEN_ORIGIN:
        toast.info("Domain origin is forbidden from instantiating fio.js");
        break;
      case fioErrs.FORBIDDDEN_COUNTRY:
        toast.info(
          "Country ISO-3166-1 Code is forbidden from instantiating fio.js"
        );
        break;
      case fioErrs.SESSION_IN_PROGRESS:
        toast.info(
          "Another authentication or enrollment session is in progress"
        );
        break;
      case fioErrs.NETWORK_IO:
      default:
        toast.info(
          "Error while establishing network connection with the target FACEIO processing node"
        );
        break;
    }
  }