> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getpara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# React Native & Expo SDK

> Documentation for the Para SDK in React Native and Expo applications

## ParaMobile Class

The `ParaMobile` class represents a mobile implementation of the Para SDK, extending the `CorePara` class.

### Methods

<ResponseField name="constructor()" type="Function">
  Creates an instance of ParaMobile.

  <Expandable title="Parameters" defaultOpen="true">
    <ResponseField name="env" type="Environment">
      The environment to use (BETA or PROD).
    </ResponseField>

    <ResponseField name="apiKey" type="string" optional>
      The API key for authentication.
    </ResponseField>

    <ResponseField name="relyingPartyId" type="string" optional>
      The relying party ID for WebAuthn.
    </ResponseField>

    <ResponseField name="opts" type="ConstructorOpts" optional>
      Additional constructor options.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="verifyEmailBiometricsId()" type="Function">
  Verifies an email and returns the biometrics ID.

  <Expandable title="Parameters" defaultOpen="true">
    <ResponseField name="verificationCode" type="string">
      The verification code sent to the email.
    </ResponseField>
  </Expandable>

  <Expandable title="Returns" defaultOpen="true">
    <ResponseField name="biometricsId" type="Promise<string>">
      The biometrics ID.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="verifyPhoneBiometricsId()" type="Function">
  Verifies a phone number and returns the biometrics ID.

  <Expandable title="Parameters" defaultOpen="true">
    <ResponseField name="verificationCode" type="string">
      The verification code sent to the phone.
    </ResponseField>
  </Expandable>

  <Expandable title="Returns" defaultOpen="true">
    <ResponseField name="biometricsId" type="Promise<string>">
      The biometrics ID.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="registerPasskey()" type="Function">
  Registers a passkey for the user.

  <Expandable title="Parameters" defaultOpen="true">
    <ResponseField name="identifier" type="string">
      The user's email or phone number.
    </ResponseField>

    <ResponseField name="biometricsId" type="string">
      The biometrics ID obtained from verification.
    </ResponseField>

    <ResponseField name="crypto" type="webcrypto.Crypto">
      The Web Crypto API instance.
    </ResponseField>

    <ResponseField name="identifierType" type="'email' | 'phone'" default="'email'">
      The type of identifier used.
    </ResponseField>

    <ResponseField name="countryCode" type="CountryCallingCode" optional>
      The country calling code for phone numbers.
    </ResponseField>
  </Expandable>

  <Expandable title="Returns" defaultOpen="true">
    <ResponseField name="result" type="Promise<void>">
      A promise that resolves when the passkey is registered.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="login()" type="Function">
  Logs in the user using either email or phone number.

  <Expandable title="Parameters" defaultOpen="true">
    <ResponseField name="email" type="string" optional>
      The user's email address.
    </ResponseField>

    <ResponseField name="phone" type="string" optional>
      The user's phone number.
    </ResponseField>

    <ResponseField name="countryCode" type="CountryCallingCode" optional>
      The country calling code for phone numbers.
    </ResponseField>
  </Expandable>

  <Expandable title="Returns" defaultOpen="true">
    <ResponseField name="wallets" type="Promise<Wallet[]>">
      An array of user wallets.
    </ResponseField>
  </Expandable>

  <Expandable title="Throws" defaultOpen="true">
    <ResponseField name="error" type="Error">
      If neither email nor both phone and countryCode are provided.
    </ResponseField>
  </Expandable>
</ResponseField>