Get sensor

import { useStytch } from '@stytch/react-native';
import React, { useCallback, useEffect, useState } from 'react';
import { Text, TouchableOpacity, View } from 'react-native';

export const Register = () => {
  const stytch = useStytch();

  const [isSensorAvailable, setIsSensorAvailable] = useState(false);

  useEffect(() => {
    const checkSensorAvailability = async () => {
      if (stytch) {
        try {
          await stytch.biometrics.getSensor();
          setIsSensorAvailable(true);
        } catch {
          setIsSensorAvailable(false);
        }
      } else {
        setIsSensorAvailable(false);
      }
    };

    checkSensorAvailability();
  }, [stytch]);

  const registerBiometrics = useCallback(() => {
    stytch.biometrics.register({
      prompt: 'Register with Biometrics',
    });
  }, [stytch]);

  return isSensorAvailable ? (
    <View>
      <TouchableOpacity onPress={registerBiometrics}>
        <Text>Register with Biometrics</Text>
      </TouchableOpacity>
    </View>
  ) : null;
};